Brian Vikander on Steve Dalkowski and the 110-MPH Fastball

The legend of Steve Dalkowski is well known. Arguably the most famous player to never reach the big leagues, the Connecticut-born left-hander is said to have thrown harder than anyone alive… and he had little idea where the ball was going. Pitching primarily in the Baltimore Orioles organization, Dalkowski walked 1,236 batters — and fanned 1,324 — in 956 minor-league innings. His star-crossed career, which spanned the 1957-1965 seasons, inspired the “Bull Durham” character Nuke LaLoosh.

Dalkowski died this past April, and a handful of months later a biography of his roller-coaster baseball life was published: Dalko: The Untold Story of Baseball’s Fastest Pitcher, by Bill Dembski, Alex Thomas, and Brian Vikander. In late October, Vikander — a longtime pitching coach with expertise in both biomechanics and mental skills — was a guest on Justin McGuire’s always-insightful Baseball by the Book podcast. What I heard prompted this interview, which was conducted over the phone last week.

———

David Laurila: How hard did Steve Dalkowski throw?

Brian Vikander: “In my opinion, he threw over 110 mph. I base that on a couple of things. The first is that there’s not one individual — not one — who has ever come forward and said that he was not the hardest thrower, the biggest arm, in the history of baseball. You’ve got guys who saw ‘Rapid Robert’ Feller, Ryne Duren, Rex Barney, Nolan Ryan, Sandy Koufax…and everybody says it was Dalko. You can debate 2-10 in any fashion that you want, but he’s No. 1. Hall of Famers said it. Earl Weaver said it. Pat Gillick said it.”

Laurila: A lot of people reading this are going to think, “That’s anecdotal; where is the proof?” They’re going to doubt that Dalkowski ever threw that hard.

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Vikander: “Well, right now we’ve got 108.1 on Nolan Ryan’s release point on a fastball, so we’re asking people, credibly, to give us two miles an hour. That’s not that big a stretch. I went down to ASMI, in Birmingham, Alabama — they are the consultants for Major League Baseball on all things kinematic in the sequencing and energy production for arms — and spent a few days. I was with seven PhDs from MIT, and they were all telling me that I don’t know what I’m talking about. But then on the third day, everybody came around. They said, ‘That theory that you have proposed, Brian, doesn’t guarantee anything, but it does put forward the possibility that this guy could have been in that rare air and actually done it.’

“It’s a shame that we don’t have any video of Dalkowski to see what he was doing. I can guess what he was doing with his mechanics, but we don’t have anything to look at, and we’ll probably never find it. But there’s no question in my mind that if everybody is saying ‘hardest thrower of all time,’ that does give you a leg to stand on. Maybe it’s Long John Silver’s leg, but there was clearly something different going on with this guy. One other caveat: I believe that he was throwing this kind of gas pre-1960, not post-1960. After a time, [his velocity] began to taper off, but in that 1958-1960 period, he was really launching it.”

Laurila: As a matter of clarification, say a pitch is clocked at 100 mph. Where is the ball when that specific reading registers on the gun?

Dalkowski: “It’s very shortly after you’ve released the baseball; it would be in the first five feet of the distance out of your hand. So if you’re releasing the ball at 54 feet, it would be between 49 and 54 feet from when it gets to home plate. When they measured Nolan Ryan at 108.1 mph, in 1974, that pitch lost 7.3 mph by the time it reached home plate.”

Laurila: What role do mechanics play in velocity? I assume Dalkowski wasn’t doing anything markedly different than countless other pitchers have over the years.

Vikander: “First of all we should clarify what mechanics are. When most people think about mechanics, they start from the point of your throwing motion: ‘Where is your glove? Let me change your arm slot.’ That’s why they foul-up pitchers. That’s why they ruin arms. Mechanics are based on the timing, from first forward movement to foot-strike to ball-release — how you’re going with that timing, that quickness, to generate energy going up the food chain. What results is your mechanics.

“Here’s an example that I often give pitchers I’m working with: Say you stumble when walking along the sidewalk — you catch your right toe on a piece of concrete that’s a few inches high — and you’re going toward a wall. You’ve got timing, you’ve got energy production, and you know what? Your hands shoot up automatically. You don’t go through a thought process to say, ‘Hey hands, save my face before I plant it.’ Same thing when you go to jump over a tennis net and catch your toe. It’s a different set of timing and energy production, but your hands still make every effort to get there as quickly as they can.”

Laurila: Dalkowski was apparently able to throw strikes fairly consistently during side work; it was during games when he couldn’t command his fastball.

Vikander: “I believe that when he was throwing on the sidelines — when he was loose, when he was in a flow, when he was in that rare air — his mechanics were perfect. Just as Sam McDonald said in the foreword of the book, they were perfect. They were flawless on the sidelines, because he didn’t carry around all the psychological baggage that ultimately weighed him down. Every once in a while he would lose the fear of failure that he hauled out to the mound, and he simply threw. Then everything came together.

“When we look at mechanics… we know for example that if you go back in time to his era, if you went to 80% of your body length, that’s as far as you needed to go. But where did that number come from? It’s one of these mystery numbers that some baseball mind made up. Why 80%? Say I pull a rubber band back and aim it at your face. I pull it back one inch, I pull it back two inches, I pull it back six inches. Don’t tell me you’re worried about the one inch or the two inch; you’re worried about the six-inch ball and how that’s going to come forward and drill you. The same thing is going on with mechanics.”

Laurila: How might that apply to Dalkowski?

Vikander: “I believe that Steve was getting out to over his body height. That would have been probably seven shoe lengths, maybe seven and a quarter shoe lengths. That means he had a longer period of time to hold on to his throwing shoulder. We know that the disassociation of front hip, the angle when your foot hits down going to home plate… your front hip has to open up or you can’t throw. But your back shoulder, your throwing shoulder, shouldn’t be coming around. So the front-hip angle, your throwing-shoulder angle, should be between 40 and 60 degrees.That’s what good pitchers are doing most of the time. However, we don’t have enough information out on the edge of the bell curve. If you could get to 80 degrees, you would have more torque. Now, you would have to get your arm through to the release point on time. That’s timing.

“If all of these things were amped up to max, I think that’s where you would find these little bits. It’s like driving a Ferrari. You get a Testarossa and put in parts for [another model], the car may run, but it’s not going to sound like the London Symphony. But then you get the right parts in this thing, and all of a sudden you get not just the individual pieces being better, you get the cumulative effect of what’s going on. I’m confident that’s where Dalko was, especially in that three-to-four-year period at the start of his pro career.”

Laurila: What is the likelihood that Dalkowski possessed physical qualities other people simply don’t have? For instance, was his arm structured in a unique way?

Vikander: “It’s a possibility. It’s something I proposed to ASMI when I was down there with Glenn Fleisig. [Dalkowski] may have had… you can build up the arm for muscles, and you might have denser bones, but there’s absolutely nothing we can do about soft tissue. Realistically, we shouldn’t be able to throw a baseball at all — your arm should fall apart — but we do, and it hangs together at least for some period of time. So he may well have had stronger, thicker, more-pliable soft tissue than is normal, particularly in the elbow. We’ll never know.”

Laurila: I’ve often heard it said that pitchers in earlier eras had far less top-end velocity than they do today. Dalkowski aside, how hard did pitchers throw 50-60 years ago?

Vikander: “I’ll respond to that in two ways. I think we have more big-throwers today than we’ve ever had. But while there’s truth to that, the guys who could really bring it, the legendary guys… I put Feller up there with anybody in that group. Everybody who saw Rex Barney said he was in that group. Duren was in that group. Herb Score was in that group. Bullet Bob Turley, for a couple of years, was in that group. So there were certainly guys who were throwing significantly harder, but the game has changed. Just like nobody wants to see ‘little ball’ on the offensive side — they want to see home runs — nobody wants to see a pitcher like Greg Maddux pitch anymore. They want to see guys striking everybody out. That’s the mentality of where people are today.

“I think there is truth in that the hardest throwers of any era would probably fit in with the hardest throwers today. If we could have accurately measured Feller in his prime, I’m confident that he would be throwing 100 mph. This would have been in the 1940s. That said, we now have more hard throwers than at any point in baseball. We’ve got more guys throwing over 100 mph today, and certainly more guys throwing in the upper reaches of the 90s, than at any point in time.”

Laurila: Going back even farther, how hard do you think Walter Johnson threw?

Vikander: “That’s a really tough one. Ty Cobb said his fastball came in making an ugly noise. I’ve caught thousands of pitchers, and I can tell you there are different noises between 91-94, 95-98, and 99-101. Anything over 101 is making a sound that is threatening. So if I could talk to Ty Cobb and ask him, ‘Where was the pitch, and what was the sound?,’ I might have some idea. But I certainly don’t know about Walter Johnson. The 1940s is one thing, but that’s going back into yet another era. That said, everybody said the guy threw BBs. He was tossing aspirins out there, and he’s always talked about as one of the hardest throwers of all time. The Hall of Famers from that era talked about him that way. I think this goes back to how many guys throw really hard. Walter Johnson probably stood on top of Mount Olympus in his era, whereas in the 1940s there were more guys threw really hard, and today we’ve got a lot more.”

Laurila: And in the late 1950s there was Steve Dalkowski..

Vikander: “I think Dalko stood alone. He was alone on Olympus. Zeus gave out one Thunderbolt, and he got it. So he may have had some anatomical advantages. That’s one thing that Glenn Fleisig and I talked about at ASMI. He may have had something that we’ve never even thought of.”





David Laurila grew up in Michigan's Upper Peninsula and now writes about baseball from his home in Cambridge, Mass. He authored the Prospectus Q&A series at Baseball Prospectus from December 2006-May 2011 before being claimed off waivers by FanGraphs. He can be followed on Twitter @DavidLaurilaQA.

15 Comments
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Cave Dameron
5 years ago

The Dalkowski mythology has always been one of my favorite baseball lores. He became a legend in an era where you had to be a major leaguer in order to be captured on video, it’s a shame that we just missed seeing him. I always wondered what his pitching motion would look like and if it would have mechanical characteristics of every other flame thrower in history. But hearing players and coaches talk about him like he was the GOAT hard thrower despite being around the same time Nolan Ryan was playing is fascinating.

Thank you David, very cool!

fjtorres
5 years ago

I looked up his stats and he came in at 5’11” and 1 75 lbs.
By today’s pitcher standards, he would be a “small” pitcher.

The outlier of all outliers.

Mahoney
5 years ago
Reply to  fjtorres

That makes him a little bigger than Ron Guidry, who hit the upper 90’s, and about the same size as Billy Wagner, who topped out around 100 MPH.

So if nothing else, we can probably say that Dalkowski was the hardest thrower ever, pound-for-pound.

rounders
5 years ago
Reply to  fjtorres

It’s usually the lefty that outperforms. Every mlb pitcher who has broken his arm pitching is a lefty.

BryzMember since 2019
5 years ago
Reply to  rounders

Eh, Joel Zumaya broke his elbow once on a pitch and he was righthanded.

Green Mountain Boy
5 years ago

I know Dalkowski’s career was 60 years ago, but we’re talking 1960, not 1860. It seems next to impossible that there are zero home movies of him. He was known back then as being the fastest pitcher in all of baseball history. It seems logical that more fans would have been in attendance when Dalkowski was pitching than when Joe Average was, and it seems logical that some of them brought 8mm or 16mm home video cameras with them to capture the fastest pitcher ever.

And yet we have no video of the guy that we know of, no matter how well or poorly it was shot? No way. The guy played for 8 years! There’s definitely film out there somewhere, it just hasn’t been identified yet. Imagine what it would be worth!

I would urge everyone to put out the word on social media. Ask your friends and families to look through those old boxes in their attics for old 8mm or 18mm films (even Super 8, which came out in 1965), especially if they were baseball fans. Explain to them who and what they’d be looking for and how to know if they found it.

rounders
5 years ago

Johnson. Twenty years ago someone drew my attention to a very old scout, in his eighties, calling the speed of every pitcher by eye. The guns all confirmed him. He said Feller was faster than all that followed him and that old time scouts he knew back in the day said Johnson was faster than Feller, and faster still pitching as a teenager on the west coast before mlb.
I’m glad to see someone else confirm that baseballs hiss in the high nineties. That was my experience in not hitting them.

DannyMember since 2016
5 years ago

I am nowhere near as learned on Dalkowski or the science of pitching as Mr Vikander. I accept that deficit of knowledge.

But it is just very, very difficult for me to believe what he’s talking about here, particularly given the complete dearth of direct evidence. Yes, I can follow why throwing 108 is theoretically possible, given our current understanding of biomechanics. And I believe that’s the view that is being endorsed by the MIT guys when they say, “That theory that you have proposed, Brian, doesn’t guarantee anything, but it does put forward the possibility that this guy could have been in that rare air and actually done it.”

But from the interview (and apparently the book), that’s not what Vikander is selling here. Given the expansion of baseball around the world, there are more people in more places playing the game than ever before. There is much greater understanding of the science of pitching than ever before. Records for “simple” human atletic skills – running, jumping, swimming, throwing things other than baseballs – are almost uniformly higher than they were 50 years ago. And you’re telling me that this guy is not only the hardest thrower of all time, but outshines everyone in baseball history to a Don Bradman degree of magnitude? *And you’re doing it without any direct evidence whatsoever?*

I just can’t get there. Frankly, I don’t know how anyone can. Believe what you will, since it is apparently theoretically possible, and such things can and do happen. But there’s no *reason* to think it’s true.

TerryMc
5 years ago
Reply to  Danny

Ehhh, I believe your logic is true in regards to the upper cohort of performers in that the top “x” percent of results keep increasing incrementally over time, but I don’t agree that this extends to singular outliers. It took a quarter century for Bob Beamon’s world record to be broken. The further you get away from the center of the bell curve, the more unlikely that chance, but all that means is Dalko was more of a winning Lotto ticket then Aroldis Chapman is.

dl80Member since 2026
5 years ago
Reply to  Danny

I agree. We know so much more about confirmation bias and wanting a thing to be true, and just the subjectivity of witnesses that it’s much more likely that everyone is remembering back decades and just imagining that this guy threw harder than anyone ever.

It’s not exciting to say “I saw the 34th fastest throwing pitcher of all time” or “I saw the fastest minor league pitcher pre-1980s.”

I think what is more likely is that Walter Johnson threw in the low 90s back when basically every pitcher was barely in the 80s, and Feller was upper 90s when few were even into the low 90s.

I can definitely buy that Dalkowski might have touched 100, maybe even pushed Chapman for 101 or 102. But 108 is just very unlikely, especially from a short lefty back when we knew almost nothing about biomechanics and proper weight training.

For context, in 1960, Dalkowski had a 13.9 K/9 ratio at Class C. I have no idea what the overall quality was, but there were only 6 teams. Regardless, Robert Arrighi struck out 13.4 per 9. That doesn’t mean Dalkowski wasn’t throwing significantly harder. But at age 20, a guy who barely made AA struck out nearly the same rate. If Arrighi was throwing 90, and Dalkowski was 98, I can see how everyone would be blown away thinking Dalkowski is the fastest ever.

carterMember since 2020
5 years ago
Reply to  dl80

I do wonder what the upper limits of how hard someone can throw is. I would be shocked if Dalkowski was throwing that hard. I do think that we aren’t far from nearly everyone sitting around 100mph from biomechanics, but my guess is 20 years from now the fastest pitch would be in the 110mph range.

LMOTFOTEMember since 2017
5 years ago

I’m going to have to stick with Nolan Ryan as fastest ever until proven otherwise. He was clocked at 101 as ball was crossing the plate. Accuracy of that measurement can be questioned for sure. But that was taken in 9th inning after he threw maybe 150 pitches. He was regularly hitting 95 on the gun in his 40’s once in stadium guns were common. And we can watch video of his delivery. He had the build and mechanics that seem perfect for maximizing velocity.

connjc
5 years ago

There’s a Netflix special called Fastball where they try to guess using physics calculations how fast Johnson and Feller threw based on some videos and a reading the Army did. They came up with Johnson throwing 94 MPH and Feller throwing over 100 MPH.

FansCommish
5 years ago

My friend Paul Lebrun was Steve Dalkowski’s next-door neighbor in New Britain. He said when Steve was 12 he would catch him with two sponges inside his mitt. For New Britain High as QB he threw a football 90 yards and took the Hurricanes to FL for a National Championship game in 1955

zekepMember since 2025
5 years ago

1) There are pictures floating around of Dalkowski delivery in which he appears to have utilized a very linear delivery, often employed by very crude/raw pitchers, and typically leading to injury (which he apparently suffered in Spring Training 1963, at age 24; likely a torn UCL, and he was never the same). High end velocity might have been generated in this manner but a) it would be tough to throw strikes (it was), and b) it isn’t sustainable
2) The documentary “Fastball” – as others have pointed out – covered much of this ground regarding velocity, doing a reasonable job of guesstimating that yes Johnson was in the 93-4 range, Feller 95+, Gibson/Koufax and others upper 90’s, then Ryan touched 100+, and now we have many pitchers with verified and accurate readings of 100+ at release (using Doppler radar of Trackman). Dalkowski was a central figure of the documentary, and many credible witnesses suggested he was THE hardest thrower of them all, but…
3) As another reader suggests, take a look at the leagues he pitched in and the competition he faced: from ages 18-21 (1957-60) he played in the lowest classes against few hitters who subsequently made it to The Show. This was an era where organized baseball at all levels was still very raw; many of the players in these leagues had minimal baseball experience, and compared to his peers, Dalkowski – not unlike Johnson or Feller before him – was a huge outlier (just as you can still find pitchers in 14/16U travel ball or Caribbean small towns who stand out as exceptional, and while to their peers it may seem like 100!, they are typically throwing 93-95).
4) Comparing the greats of any sport across eras is always lively discussion, but it’s the proverbial dog chasing his own tail: the equipment, facilities, coaching, competition, opportunities, and yes, compensation is always better in any succeeding era, which certainly enhances the apparent skill with which the best play the games (think baseball, golf, tennis, basketball, track& field, etc). Personally, I simply prefer to compare athletes to their peers, because ultimately the only yardstick is winning and losing vs those you played against. While the legend of Dalkowski is fun to mythologize, throughout baseball history, the minor leagues have been littered with many other very hard throwers who failed to find lasting success in MLB.