Tanner Roark and the Importance of Strike One
Cliff Lee. David Price. Jordan Zimmerman. Tanner Roark. They share consecutive spots on an important leaderboard, but maybe more importantly for Tanner Roark is that he’s even in the same paragraph to begin with. Since he was released by his college team in 2007, a few signature moments have taught him the tools (and grips) to survive (and thrive) in the big leagues.
The first moment was maybe the biggest. That was the moment the Texas Rangers called and said they wanted him in their system. “Yeah I was very surprised — I was grateful,” Roark admitted before a June game with the Giants. University of Illinois at Urbana-Champaign had released him during winter break, and then for six months, the pitcher “hadn’t even seen any competitive time on the mound.” Just look at the Wikipedia sentences, right there in a row on his page:
Roark played one season with the Southern Illinois Miners of the independent Frontier League in 2008. In 3 games, he was 0-2 with a 21.41 ERA. In just 9.2 innings, he gave up 23 hits along with 25 runs while striking out 11.
Roark was drafted by the Texas Rangers in the 25th round of the 2008 Amateur Player Draft
The pitcher himself doesn’t know exactly what they saw. “It was a tough road to go through, I knew I had the stuff, I had the confidence in myself, but when I was in Indy ball I was getting shelled,” he said. But the Rangers called, and then someone got hurt in High-A, he was promoted, and then he was included in a trade to the Nationals.
Standing on a mound with the Nationals one day, Roark had an epiphany. “I just scratched the four-seamer and starting throwing all two-seamers, and it’s been a blessing,” he said of that moment. No mentor, no advice, no meeting with his team — just one reliever trying to make a name for himself and ditching the four-seamer.

That’s definitely not a four-seamer.
“It’s worked for me, worked really well, and I’m trying to use it as much as I can, because my fastball has been always my best pitch,” Roark said about using the two-seamer. Considering that he says he doesn’t throw the four-seamer, we can probably assume that Roark’s 64% fastball usage is all sinker. That means he would top either the two-seamer or sinker leaderboards on our site. So it’s only a quirk in the classifications that makes his 44% ground-ball rate on the pitch a top-30 rate among regularly thrown-fastballs — that number would actually be below-average among two-seamers.
That’s okay, because Roark had another moment that taught him how important command was. “My 2012 year in Triple-A, I was 6-17… That was my best year,” said Roark. Not because of results, because his 4.39 ERA and 1.41 WHIP were actually the worst of his pro career, but because the season was “a mental year.” He learned a lot and the year was important. “For me — Because I knew the stuff was there, and we talked about it, and you can’t control anything else behind you. That’s when I would get in my own head about that, and once you get in your own head, it’s too late,” Roark said of the lessons he learned on the mound in 2012. 33% of his balls in play that year were hits, a career-worst, and probably not his fault.
Since that year ended, Roark has walked a mere 5.4% of the batters he’s faced. Since he joined the major leagues, he’s top 20 in walk rate. The confidence he learned when he cleared his head in 2012 has helped him throw the ball in the zone. “They know there’s a fastball coming in 2-0, 3-1, just, here it is,” he said, “you’ve got seven other guys behind you helping you out.” Learning that was when he “overcame a lot of stuff.”
Particularly important to command in general, and to Roark, is the first pitch strike. “That’s the best pitch,” Roark said of strike one. That’s why he’s a top-ten first-strike guy since he’s come into the league. What happens if he comes up against a lefty that he knows likes to swing at strike one? “You gotta really start it on the outside half of the plate and let it run off — make it look like it’s a strike and then it runs off,” Roark said.
The point is to get a first pitch strike, not to necessarily groove it down broadway. That sort of thinking has allowed Roark to continue getting strike one despite throwing the sinker 67% of the time to open a plate appearance and being known for concentrating on getting ahead with the first pitch.
Command also allows the Nationals’ pitcher to make the most of what is by most accounts an okay sinker. Particularly when it comes to the platoon splits on the pitch. When he’s faced with lefties, Roark knows he’s trying to get it into the hitter “so that I don’t start it somewhere where I leave it right over down the middle where they can rip it.” The solution? “Have to start it pretty much on the front hip and make them get them out of the way and then have it run back over. You have to make sure you get it there, or else it’s going to get hit hard,” Roark admitted.

That’s a top-tier one-finger curve ball.
Roark’s other pitches are good, too, of course. The 15% whiff rate he gets on his curve is 24th among curves that have been thrown more than 250 times since last year, and he rates it as his best non-fastball pitch. “I get it right on the seam and I really torque it on my middle finger and throw the heck out of it,” Roark says of the pitch. It’s a nice pitch to have, too, since the platoon splits on a curve make it a weapon against both hands.
The slider and the change, for the most part, are platoon pitches for him so far this year. According to BrooksBaseball, he’s thrown the slider to lefties 2% of the time, and the change to righties less than 1% of the time. If you look at results split by handedness, both the slider (13% whiffs) and change (14% whiffs) are just below the benchmarks for those pitches. Useful, if not stand out pitches.

He threw the ball in the air and caught it like this?
They require work, of course.
For the change, it’s just about repetition. A college coach told him that the best way to find his change-up grip was to be natural about it: “Throw the ball up in the air, catch it, throw it. Did it five or six times, and the last one was like, huh?” That grip has stayed with him to this day, but he admits that he’s “definitely struggled” with the pitch that he throws like a two-seamer but lets roll off his middle finger. “The more I throw it in the game, the more the repetition makes it better,” he said. The ground-ball rate on his change is up to 57% from 31% last year, so he’s making progress.
For the slider, the work is situational. Roark is working to find ways to use the pitch against lefties. “I’ve just got to bury it in the back foot,” for the most part, but he’s also been trying to work on going front door to lefties. He wants them to “give up on it on the outside corner.” Adding those two sliders is important — “The scouting report says he only throws these three pitches against right-handers and these three against lefties. I have four pitches for a reason, so I have to use all four,” Roark said.

The slider looks like a modified version of his curve grip.
June sixth this year, Tanner Roark pitched the game of his life. He threw eight shut-out three-hit innings against the Padres, with 11 strikeouts and no walks. Remembering that game brought his trademarked humble smile back, and an appreciation of what was going right that day. “I felt like I had my best command I’ve had, I felt like I was getting ahead of guys 0-1 and I had them on their heels, in defense mode right off the bat,” he said. “Then after that I could utilize my changeup, slider, curveball.”
Roark isn’t done working — he remembers those days pitching for the Miners too well to stand pat. But he knows two things that he can build off of. One is that his two-seamer and curve are major league quality. The other? “The money pitch in baseball is strike one.”
With a phone full of pictures of pitchers' fingers, strange beers, and his two toddler sons, Eno Sarris can be found at the ballpark or a brewery most days. Read him here, writing about the A's or Giants at The Athletic, or about beer at October. Follow him on Twitter @enosarris if you can handle the sandwiches and inanity.
Interesting young pitcher. I would own a jersey with his (my) name on it if it wasn’t pronounced “row-ark.”
Huge!
How big are his hands? Those mitts seem huge.
Uh, huge!
Great article. It must have taken courage for Roark, as a young RP, to scratch the 4-seam FB without any guidance or coaching input.
I see organizations like the Pirates having success by getting their pitchers with less overpowering stuff to throw sinkers, and I’m surprised that this isn’t encouraged more often.
young Maddux basically
I find the methodology of these interview articles perplexing–it seems that they lack the scrutiny and critical thinking typically found in fangraphs articles.
At times, it seems likes you are scouring the player’s statistical profile for anything that reinforces his thoughts about himself rather than taking a critical eye to these thoughts.
Statements like,
“The confidence he learned when he cleared his head in 2012 has helped him throw the ball in the zone.”
and
“Particularly important to command in general, and to Roark, is the first pitch strike… That’s why he’s a top-ten first-strike guy since he’s come into the league”
and
“That sort of thinking has allowed Roark to continue getting strike one…”
are not insignificant claims. These are claims about the causes and effects at play on the baseball field which do not have any evidential support beyond the personal feelings of the players you are interviewing. I understand that the point of these articles is to give a profile of the players’ mentality and perception of the game, but it seems that offering these claims in an editorial voice lacking analytic scrutiny is not befitting of the work typically found on fangraphs.
Most interviews just take what a player says at face value without any fact-checking. I like these FG interviews because they go get actual stats and link them to what the player says.
Was his confidence really responsible for his command? Maybe not. But at least we do have that command quantified along with an explanation from the player.
Statement one is just a causal relationship that he set up that is impossible to test. It follows what most pitchers have told me about confidence and command, however.
Statement two… huh? He says strike one is super important to him. He’s in the top ten in first pitch strikes. Huh?
Eh, the last one. Listen, if I was going to take these interviews and rip the guys a new one for every little thing that wasn’t entirely backed by the numbers, they wouldn’t talk to anyone anymore.
Basically what I try to do is focus on the truth that the players can uncover that we don’t necessarily see from the outside. If you want me to talk about why Roark’s start might be unsustainable, head on over to RotoGraphs.
Additionally, you could point out that we don’t have full pitching data for every single minor league team. Some of Roark’s statements could be verified if he had made his changes as a major-leaguer, but he was in the minors.
For what it’s worth, among the Nats fan community, even statheads like me give full credence to his word on this. There was, quite simply, no way (numerical or otherwise) to guess that the Tanner Roark we saw 2-3 years ago was going to become a major leaguer, even a poor one.
I appreciate your response to my comment. I included the second statement because it seemed like you were suggesting that he’s in the top 10 because it is important to him. I think it’s an open question as to whether or not the strategy a pitcher has going into an at bat is predictive of where he will end up on any leaderboard like that. I admit, it was nit-picky.
I think your overall project of getting to know these players’ perspectives is intetesting; I guess I just wish it also incorporated a discussion of how they might be overreaching or even mistaken in their own accounts of their skill sets and strategies. I understand that’s probably impractical and professionally self-defeating, but surely a higher baseline of skepticism is possible.
Also, I think you’ve got it a little backwards about the FG page thing. I research the guy going in and then ask him about the things that stand out in their statistical profile.