Back in early 2013, I wrote a guest article for Baseball Prospectus entitled “How Far Did That Fly Ball Travel?” In that article, I posed a seemingly simple question: Can we predict the landing point of a fly ball just after it leaves the bat? A more precise way to ask the question is as follows: Suppose the velocity vector of a fly ball just after leaving the bat is known, so that the exit velocity, launch angle, and spray angle are all known. How well does that information determine the landing point? I then proceeded to investigate the question, at least for home runs, with the aid of HITf/x data for the initial velocity vector and the ESPN Home Run Tracker for the landing point and hang time. Using a technique described in the article, that information was used along with a trajectory model to reconstruct the full trajectory and extrapolate it to ground level to determine the fly ball distance. The answer to the question was immediately obvious: The initial velocity vector poorly determines the fly ball distance.

This conclusion led naturally to the next question: Why? One obvious reason is variation in atmospheric conditions, especially wind. However, the data revealed that the variation in home run distance for given initial velocity was as large in Tropicana Field, where the atmospheric conditions are expected to be constant, as in the rest of the league. So that was eliminated, at least as the primary culprit.

The article then went on to consider variation in two other parameters that play a role in fly ball distance: backspin ω_b and drag coefficient C_D. Neither of these parameters were directly measured. Rather they were inferred, along with the sidespin ω_s, in the procedure used to recreate the full trajectory. The analysis showed the following:

• For a given value of C_D, distance increases as ω_b increases. This makes sense, since larger backspin results in greater lift, keeping the ball in the air longer so that it travels farther.
• For a given value of ω_b, distance decreases as C_D increases. Again this makes sense, since greater drag is expected to reduce the carry of a fly ball. Interestingly, this was the first appearance in print of a suggestion of a significant ball-to-ball variation in the drag properties of baseballs.
• There was a moderately strong positive correlation between C_D and ω_b, suggesting that the drag on a baseball increases with increasing spin, all other things equal. Although this effect is well known for golf balls and had been speculated for baseballs in R. K. Adair’s excellent The Physics of Baseball, to my knowledge this is the first real evidence showing the effect for baseballs.
• Given that both lift and drag increase with increasing ω_b and that they have the opposite effect on distance, it was tentatively concluded that at high enough spin rate there would be no further increase (and perhaps even a decrease) in distance with a further increase in spin.

Read the rest of this entry »

The Cincinnati Reds have been eagerly awaiting Hunter Greene’s return from Tommy John surgery. And for good reason. Prior to going under the knife 15 months ago he was hitting triple digits with his heater. Drafted second overall by the Reds in 2017 out of a Sherman Oaks, California high school, Greene is No. 77 on our 2020 Top 100 Prospects list.

According to Kyle Boddy, his return is nigh. Cincinnati’s pitching coordinator recently spent time with Greene in California, and he deemed the 20-year-old’s rehab “basically done.” Throwing in front of a Rapsoto, Greene was “an easy 97-plus [mph], reaching 100-101 when he was rearing back.”

More than a return to health is buoying the return to form. With the help of technology — “he’s really getting into the metrics and analytics” — and a former Chicago White Sox pitcher, Greene has made a meaningful change to his delivery. What had been “long arm action with a big wrap in the back” is now a shorter-and-cleaner stroke.

“That’s a credit to people like James Baldwin, who was the rehab coach and is now our Triple-A coach,” Boddy told me. “JB has worked with Hunter extensively, leaning on materials from Driveline Plus. Hunter has had a tendency to cut his fastball, so we’ve relied on a lot of video to show him how to fix that and get more carry.” Read the rest of this entry »

Ryan O’Rourke experienced life in the big leagues. The recently-retired left-hander appeared in 54 games with the Minnesota Twins between the 2015 -2016 seasons, and in two with the New York Mets last year. But the bulk of his career was spent in the minors. A 13th-round pick by the Twins in 2010 out of Merrimack College, O’Rourke toiled down on the farm in each of his 10 professional campaigns.

He experienced a lot. The minor leagues are an adventure, and while often fun, they are by no means a bed of roses. The pay is bad, the travel and accommodations are arduous, and for the vast majority of players, crushed dreams are inevitable. Moreover, success and failure aren’t always dictated by talent alone.

———

David Laurila: How would you describe professional baseball at the minor-league level?

Ryan O’Rourke: “Now that I can look at it from a helicopter point of view, I’d say that it’s a crapshoot in the truest sense of that word. If you don’t end up with the right organization, and your development isn’t a priority, your path to the big leagues is so much more difficult than it already is.

“I was fortunate to be with the Twins, who were very good about taking care of people, but I’ve heard horror stories from other teams. If you’re a nobody — anyone outside the 10th round is probably a nobody — and don’t show promise right away… let’s just say that guys who get big money in rounds one through 10 are given countless opportunities over someone who may have deserved it more.

“That’s the sad nature of the minor leagues, which, from a business standpoint, I do understand. If you gave one guy $400,000 and another guy $4,000, it’s obvious who you’re keeping. And sometimes it’s a matter of a coach liking you or not. Sometimes you’re cut because you didn’t impress one guy.”

Laurila: How much jealousy and resentment is there of high-round guys? For instance, Byron Buxton is a talented player but he also got a $6 million signing bonus. Read the rest of this entry »

There are plenty of rule changes coming to baseball in the 2020 season. We’ve written about many of them: the universal DH, the extra-innings rule, and expanded rosters, to name a few. Today, I thought I’d take a crack at something less immediately evident but still meaningful: the denser schedule.

In 2019, teams played 162 games in 186 days. That meant the schedule was 13% off days, give or take. Four of them were clustered around the All-Star break, but for the most part, they were spread out evenly. Off days are a welcome respite in a team’s schedule, a break from the grind. Sometimes they’re necessary for travel, of course, but mostly they’re meant just to be time for players to recover from the grueling march to October. This year, 60 games in 66 days means only 9% off days.

For most players, an off day is simply that. For pitchers, however, days of rest carry greater meaning. A day off is a day closer to starting again. Imagine a schedule with 80% off days — a game every five days. Your ace could pitch more or less every game, give or take a maintenance break here and there. Conversely, in a schedule with no off days at all, every pitcher would take the same number of turns in the rotation.

Given an off day, teams can, in theory, squeeze extra starts out of their ace. In practice, it doesn’t quite work that way. It also doesn’t not work that way, however; seven pitchers made 34 starts in 2019, more than a fifth of the games on the schedule. Teams are logical about giving their best starters extra turns when they can. An extra Justin Verlander start beats a Jose Urquidy start, no offense to Urquidy. Read the rest of this entry »

Below is another installment of my series discussing each team’s 60-man player pool with a focus on prospects. If you missed the first piece, you’re going to want to take a peek at its four-paragraph intro for some background, then hop back here once you’ve been briefed. Let’s talk about the National League East.

Atlanta Braves

Prospect List / Depth Chart

The Braves have pooled the most catchers in baseball with seven (eight if you count Peter O’Brien and the faint memory of his knee-savers), several of whom are prospects. I think Travis d’Arnaud’s injury history and the implementation of the universal DH makes it more likely that Alex Jackson opens the season on the active roster. I don’t think this would save Atlanta an option year on Jackson since they optioned him in mid-March, and Atlanta’s bench projects to be very right-handed, so he might be competing with Yonder Alonso for a spot.

We’re probably an Ender Inciarte injury away from seeing Cristian Pache play in the big leagues every day. Aside from him, I doubt we see any of the recently-drafted position players (Drew Waters, Braden Shewmake, Shea Langeliers) playing in the bigs this year, and if William Contreras debuts it’s likely because a couple guys ahead of him have gotten hurt. Read the rest of this entry »

One of the greatest myths of baseball history is the asterisk supposedly added to Roger Maris‘ then-record 61 home runs in the 1961 season. As the story goes, Major League Baseball, aghast that Babe Ruth’s home run record could be broken by Maris in a 162-game season when Ruth’s Yankees only played 154 games, forced Maris’ record to wear scarlet punctuation in order to shame it in the record books. The only problem is that the Maris asterisk never actually happened. Commissioner Ford Frick, who held the job at a time when he was still expected to at least give lip service to the idea of being a steward to the abstract notion of baseball, was simply expressing his opinion; no asterisk ever appeared next to Roger Maris’ name or record.

The truth about baseball’s record book is that its entries have never had much in the way of purity. From changes in the baseball and the mound to whether players could or could not spit on the ball, numbers in one season never really mean exactly what numbers in other seasons do. Not even baseball’s greatest shame — enforcing a grotesque color line that robbed countless star baseball players of their turn in the majors — resulted in a culling of statistics from the game’s first century.

Records tend to be set in an environment conducive to setting them. No dead ball season features a player with a home run total in even the top 1,000 in history; there’s a reason that strikeout records, both positive and negative, are a feature of modern baseball, not antiquity. Bob Gibson’s 1.12 ERA in 1968 is currently recognized as baseball’s number to beat only because the dead ball era was deemed to be too different; Tim Keefe, Dutch Leonard, and Three Finger Brown each boast one better than Gibson’s. And Gibson’s record itself reflected the environment — The Year of the Pitcher resulted in baseball lowering the mound by a third and reducing the size of the strike zone for the 1969 season. Read the rest of this entry »

Yesterday, a few days after the transaction freeze was lifted, we had our first mid-pandemic trade when the Padres acquired Jorge Mateo from Oakland for a Player to be Named Later. Let’s dig into this deal, which is more important mechanically than it is from a baseball standpoint.

The Padres sending a PTBNL to Oakland circumvents the stated 2020 restriction that only players who are part of the 60-man player pool may be traded. Even if the A’s and Padres already know who the player will be, announcing the deal with a PTBNL distinction enables Oakland to avoid using a player pool spot on the new prospect. It’s an indication that, whoever the player is or will be, they’re not currently in San Diego’s 60-man pool, otherwise they’d just have been announced as the trade piece. Since there will be no minor league season, we won’t have an awkward, Trea Turner or Drew Pomeranz situation where a team is rostering and developing a minor leaguer who they and the industry knows they’ll soon trade. Even if the PTBNL needs to be put on the 60 later this summer in order to complete the transaction, doing it at the last possible moment enables the teams to have that roster spot free for as long as possible. Read the rest of this entry »

It was a mundane transaction, one that ordinarily wouldn’t have required 500 words to explain to a baseball-starved readership, let alone 1,800. Matt Kemp, a 35-year-old former All-Star who played just 20 major league games last year, signed a minor-league deal with the Rockies. Given the move’s timing and the circumstances that surround it, however, Kemp-to-Colorado leaves a whole lot to unpack, and so here we are.

Kemp is on a minor-league deal, but he won’t play in the minors this year because there won’t be any minor league season, news of which was officially announced on Tuesday, though the outcome had long been apparent. Kemp may not play in the majors, either, not only because it’s unclear whether he’s good enough to do so anymore, but because the coronavirus pandemic that delayed Opening Day by nearly four months is still running rampant, and because the precautions designed to keep players and associated staff healthy may not be enough.

Even before the official green-lighting of the season, the Rockies were among the first teams to feel the impact of the coronavirus. Last Tuesday, the Denver Post’s Kyle Newman reported that four-time All-Star outfielder Charlie Blackmon was among three Rockies who had tested positive for COVID-19, along with pitchers Ryan Castellani and Phillip Diehl, all of whom had been informally working out at Coors Field in recent weeks. News of their illness followed reports of at least half a dozen teams being hit by the virus, though the players and staffers who tested positive on those teams weren’t identified. Blackmon and company were, but that’s not supposed to happen. While MLB has created a COVID-19-related injured list among its many new roster rules, on Tuesday ESPN’s Marly Rivera reported that both Yankees general manager Brian Cashman and Cubs general manager Jed Hoyer said that teams are not allowed to divulge the names of players who tests positive, in accordance with the Health Insurance Portability and Accountability Act (HIPAA). Read the rest of this entry »

The 2020 season, assuming it happens and is completed, is sure to have some quirky statistics that will be tough to wrap our heads around. The home run leader might not even get to 20 dingers this year. A three-win season might lead all of baseball. And while batting average has fallen out of favor as the be-all, end-all of a hitter’s talent at the plate because walks matter and getting a double is better than getting a single, hits are an undoubtedly good pursuit for batters. As such, the aura of batting average still maintains some glow when contemplating the history of baseball. The pursuit of a .400 batting average in a shortened season due to a pandemic will not and should not be viewed with the same historical significance as Ted Williams’ run in 1941, or even George Brett’s 1980 campaign or Tony Gwynn’s strike-shortened 1994 season, but it would make this season a little more fun.

Ty Cobb, George Sisler, and Rogers Hornsby all put up batting averages above .400 nearly 100 years ago, while Ted Williams was the last player to hit that mark nearly 80 years ago. The list of players who have even hit .375 since then is a short one: Stan Musial’s .376 (1948), Williams’ .388 (1957), Rod Carew’s .388 (1977), George Brett’s .390 (1980), Tony Gwynn’s .394 (1994), and Larry Walker’s .379 (1999). The last player to hit above .350 was Josh Hamilton, who hit .359 in 2010. History has shown that if a very high batting average is your goal, the odds are very much stacked against you in a full season. Shrink the season down to just 60 games, though, and we might get a fighting chance. Read the rest of this entry »

As Major League Baseball and the Players Association engaged in tense negotiations to resume play after the season was initially suspended due to the COVID-19 pandemic, much of the focus was understandably spent on the money players would be paid for competing in games during the crisis. But in addition to the compensation for players on the field, a number of other issues needed to be sorted out, including protections for players who did not wish to play this season out of concern for their own health and safety, or for that of someone close to them. Both sides knew that regardless of the salary agreement and health guidelines passed, there would be players with pre-existing health conditions, ones who live with or care for high-risk individuals, and ones in otherwise uncertain situations who would prefer to sit the 2020 season out and wait for next year.

On Monday, the first wave of such decisions arrived, with four veteran players announcing they wouldn’t play the 2020 season. First was Arizona Diamondbacks right-hander Mike Leake, whose agent released the following statement:

Mike Leake is set to be a free agent after the 2020 season. Here is an explanation of his opting out from his agent, Danny Horwits. pic.twitter.com/dtlZm4OC5E

— Jeff Passan (@JeffPassan) June 29, 2020

A little while later, The Athletic’s Britt Ghiroli reported that two members of the defending champion Washington Nationals, Ryan Zimmerman and Joe Ross, had also opted out of the season. Zimmerman released a statement, as did Nationals general manager Mike Rizzo.

pic.twitter.com/xlWn1V9sLP

— CAA Baseball (@CAA_Baseball) June 29, 2020

pic.twitter.com/FUwb7zUFHr

— Washington Nationals (@Nationals) June 29, 2020

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