Can Tanner Houck Rein In His Jekyll-and-Hyde Act?

For the 2023 Red Sox, the starting rotation was always going to be about who could stay healthy. They entered the year with seven main rotation contenders in the organization: Chris Sale, Corey Kluber, Nick Pivetta, James Paxton, Garrett Whitlock, Brayan Bello, and Tanner Houck. With Paxton back from the injuries that have kept him out for over two years and Whitlock possibly eyeing a late-May return, the Sox could end up with all seven healthy for the first time by the end of the month. This would be great news for Boston, which has been struggling to find the right permutation of pitchers to make up a consistent starting unit. It wasn’t the best news for Pivetta, whom Alex Cora announced on Wednesday night will be moving to the bullpen. If all are still healthy when Whitlock returns, the Sox could have another tough decision on their hands.
Frankly, in terms of production, starting pitching has been a bit of a mess so far for the Red Sox, and Houck has been among those struggling. Through eight starts, he has a 5.48 ERA despite a 4.10 FIP and 3.96 xFIP; he’s allowed five home runs in 42.2 innings after giving up just eight in 146 career innings before this year. There are some indicators that bad luck is at play: his 13.5% HR/FB rate is nearly twice his rate from last season, and his 59.2% LOB% is far lower than his 75.5% rate in 2022. But since 2021, when he was last regularly starting, he’s fallen from the 85th percentile to the 54th in xwOBA/xERA, the 82nd to the 23rd in average exit velocity, and the 87th to the 38th in strikeout percentage.
| Player | xwOBA | xBA | xSLG | EV | Hard% | K% | BB% | Whiff% |
|---|---|---|---|---|---|---|---|---|
| Garrett Whitlock | 23 | 15 | 15 | 72 | 66 | 17 | 88 | 49 |
| Brayan Bello | 24 | 21 | 18 | 16 | 3 | 49 | 68 | 59 |
| Chris Sale | 63 | 73 | 63 | 55 | 70 | 79 | 70 | 57 |
| Nick Pivetta | 7 | 12 | 4 | 3 | 4 | 50 | 28 | 50 |
| Tanner Houck | 54 | 47 | 48 | 24 | 36 | 37 | 52 | 63 |
| Corey Kluber | 13 | 31 | 8 | 24 | 16 | 23 | 52 | 27 |
Aside from his struggles in the rotation, Houck’s pedigree as a reliever makes him a candidate to be bumped to the bullpen. (The same could be said of Whitlock, but the front office gave him the nod to start over Houck during the offseason.) After his final start of last year on May 8, Houck settled into a relief role quite nicely, first in a multi-inning capacity and then taking over the closer role from mid-June until he was shut down with a back injury late in the summer. In those 25 appearances, he allowed just six earned runs, posting a 1.49 ERA, 3.17 FIP, and 3.39 FIP. This is the run that might tempt Cora and his staff to slot him back into a relief role, despite Houck’s own wishes. Read the rest of this entry »




