Originally posted on Taking Bad Schotz  |  Last updated 5/13/13
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Clay Buchholz K/9 is definitely going to come back down to earth. His velocity hasn’t changed from last year, his SwStr% is around career norms, and he’s throwing fewer pitches in the zone.   via thebostonjam.com However, Jack Moore over at FanGraphs writes: So what’s new? Via last night’s Blue Jays broadcast, Red Sox catcher Jarrod Saltalamacchia said Buchholz’s biggest difference is improved fastball command. And indeed, the numbers (via BrooksBaseball.net) bear this out: Buchholz has thrown his four-seam fastball for a called strike 27.5 percent of the time this year after just 22.8 percent in 2012. Conversely, the pitch has seen a similar drop in in-play rate. Considering Buchholz has allowed a .537 slugging on contact on the pitch for his career — the worst by over 100 points for any pitch he still throws — the fewer four-seam fastballs put in play the better. By keeping the fastballs on the corners, something he did proficiently Wednesday night, he’ll turn what used to be balls in play into called strikes or foul balls. He has thrown the fastball for a strike but not in play 51.8 percent of the time this year, six points higher than last season. And, with 160 four-seam fastballs thrown already this season, this difference is already statistically significant (in a 90 percent confidence interval, to be specific). His HR/FB won’t stay grounded at 3.7 percent, but keeping fastballs out of play will keep it from escalating too quickly. It’s especially key because he needs to be able to throw the fastball to get into favorable counts — it’s his best-controlled pitch at about 68 percent strikes the last two seasons, slightly better than the two-seamer and much better than his off-speed options. And thanks to those fastball strikes, Buchholz has been in plenty of two-strike counts. The next question, then, is which pitch will be the out pitch. His curveball has been shockingly bad at drawing whiffs — under 10 percent since 2007, close to the major league fastball average — and that hasn’t changed this year. But his changeup, at least in 2013, has been an elite swing-and-miss pitch. Of the 74 Buchholz has tossed, hitters have waved at 20, a massive 27 percent. As mentioned above, Buchholz’s changeup has been heralded in the past; a 70 grade is frontline material. But he was struggling mightily with the pitch last season, so much so that he scrapped it for a splitter Josh Beckett taught him after he threw the pitch for a ball nearly 50 percent of the time in April last season. That arsenal change didn’t take as the calendar flipped to 2013. Buchholz had little trouble drawing swings and misses when he used the changeup in 2012 — 18.9 percent is still an excellent mark for a changeup — and his control issues have disappeared. Buchholz threw 13 changeups Wednesday night with nine (69 percent) going for strikes, and his 63 percent overall strike rate works fine for a pitch designed to fool hitters. The pitch has been devastating to left-handers and right-handers alike, with whiff rates over 20 percent to both sides. It’s been so good, he’s put the splitter back in the toolbox, leaving it as a side project for bullpen sessions. Things will come back to earth. Buchholz’s changeup probably won’t finish with a higher whiff rate than Aroldis Chapman‘s slider (currently at 24.4 percent). Teams will tag his fastball for a few home runs. But Buchholz has already thrown enough fastballs to suggest his control and command of the pitch have improved this year, and his changeup has been a highly regarded pitch dating back to his time in Double-A. If he can maintain even a fraction of the improvements he’s shown over his first five starts with these two pitches, the Red Sox can expect Buchholz to finally step into his frontline potential. There’s certainly reason for optimism. In addition there are 2 big things that I can take away from looking at his stats: #1. Big leap in first pitch strikes. This started last year and really amplified in June. Getting ahead in the count has made a huge difference for Clay. This looks stable.   #2. Big decline in Swing %. Jack notes Buchholz has done a good job painting corners, but it’s also been the movement on his pitches landing anywhere in the strike zone. You know how a batter will admit he was fooled by shaking his head after a swinging strike? I’ve seen more head shakes, deep breaths, and other assorted dejected body language from hitters on called strikes. Clays pitches are dancing. Pitch looks like it’s outside the plate, and breaks into the strike zone at the last possible moment. This is where the doctoring accusations become really interesting in my opinion. He’s already made 2 starts post allegations, going 14 innings with a 3.85 ERA, 1.29 WHIP, and 13 K’s. Not terrible, not great either. Of course 2 starts isn’t a lot to go on. I’d like to see 3-4 more starts before making a firm declaration on his outlook for the rest of the season. If I had to make a decision right now, I’d sell high if possible. When in doubt don’t trust a 6 week sample size. From here on out I’ll project a 3.55 ERA, 1.25 WHIP, and a 7.2 K/9. Still a perfectly solid starter, but not an ace.   Article can also be read at http://clutchfb.blogspot.com/2013/05/clay-buchholz-legit-or-not.html   -ClutchFB
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