In a few hours, the Red Sox play their first win-or-go-home game of the season. And with their season on the line, they’re handing the ball to Clay Buchholz.
Yes, the same Clay Buchholz who posted a 4.78 ERA, 5.06 FIP, and 5.32 xFIP this season while getting bounced from the rotation. Buchholz is getting the ball in large part because of how he finished the season, as he ran a 2.86 ERA over his final 10 appearances. But despite some talk of changes in his approach, the Red Sox should not fall victim to overweighting recent performance; most of the evidence suggests that Buchholz is still not a very good pitcher, and shouldn’t be allowed to dig the team any kind of hole this afternoon.
Even if we accept the arbitrary endpoints that allow a focus on just his 10 most recent appearances, Buchholz actually wasn’t even that good down the stretch. Here’s his line from those 10 outings, compared to his 27 appearances prior to that stretch.
Buchholz, Arbitrary End Points
Last 10 Games |
8% |
19% |
42% |
0.82 |
0.262 |
83% |
2.86 |
3.94 |
4.88 |
4/6 to 8/13 |
10% |
15% |
41% |
1.73 |
0.264 |
62% |
5.66 |
5.58 |
5.52 |
The walks are down a little bit, the strikeouts are up a little bit, and overall, Buchholz did pitch better in the last 10 games than he did at the start of the year. But really, there’s one column there driving almost all of the difference: his home run rate got cut in half, which led to him stranding a bunch of runners. John Farrell even states this, without using numbers, in his assessment of Buchholz’s improvement.
“Where he was burnt earlier in the season by the big inning, he’s avoided the big inning by virtue of not allowing multiple runners inside of a given inning then a big blow, a three-run homer or something like that, has followed.
The argument for Buchholz as a pitcher worthy of starting an elimination game relies on buying into six weeks of home-run suppression; outside of the 7% HR/FB ratio he put up in those last 10 outings, he still didn’t really pitch all that well. And it’s not like Buchholz has a long history of running very low HR/FB rates; his career mark is 10%, just a tick below the league average over those years. His career FIP and xFIP are almost identical, so there just isn’t any real reason to think that Buchholz is now a guy who give up long fly-ball outs without giving up home runs.
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