A look at the 2026 Red Sox Pen:
Many of us went into 2025 deeply dissatisfied with the quality of our pen. While it appeared to have depth, the quality of the expected high leverage pitchers was highly in doubt. The pen became one of our strengths, thanks in large part to a stunning season by Chapman and a strong year from Whitlock. The depth came through, despite not really drawing from the expected depth of SP'ers we had lined up over the winter.
We may get to use more SP'ers in the pen in 2026, but I will start with the known pen arms on the roster:
Chapman had a legendary season, and that is no hyperbole. 61.1 IP with just 28 hits (3 Hrs) and 15 BBs (0 HBP.) He K'd 85. His OPS Against was a mind-boggling .387! It's hard to expect anybody to repeat numbers like that, and for a guy who will be 38 to start the '26 season, it would be miraculous. Brez extended him, so we'll find out. I'm happy he's here.
Whitlock had his first start-free season since his rookie year in 2021. Some might say it was no coincidence we made the playoffs in just these two seasons. If it wasn't for Chapman, we'd be marvelling at his .543 OPS Against for 2025. In 72 IP, he let up less HRs (2) than Chapman. I'm hopeful he can run back these numbers in '26.
Slaten missed a lot of key time in 2025, and perhaps the most important thing for him is to just stay healthy for the full 2026 season. His rookie 2024 season was pretty amazing. He had a .576 OPS Against in 55 IP with a 6.4 K/BB. Although most of his numbers looked worse in 2026, he still logged a .580 OPS Against over 34 IP. Perhaps we can count on him to counter an expected regression from Chapman. I gotta say, I think we have an impressive top 3 RP'ers.
Weissert caught some grief over the season, much of it during game thread lash-outs, but he did the job in 2025. He very well may outshine Fitts as the prize from the Dugo trade. He put in 67 IP with a decent .647 OPS Against. I'm hoping we can count on him, again in 2026.
Bernardino had a second straight decent season. His .569 OPSA was impressive. He missed some time, near the end of the season, but I think he's locked into a sure slot on the 2026 26 man roster.
Guerrero .530 OPSA in just 17 IP could still win a big role on the '26 roster.
Murphy .598 OPSA in 35 IP looks great, but he walked too many batters and was inconsistent. He was coming off a long time off with injury, so maybe there is till hope for a significant role in 2026.
Winckowski missed most of 2025, but was a decent pitcher for a few years, beforehand. His 2023 saw a 2.88 ERA, but he's never really had great numbers in other areas or measurement.
Moran could be a surprise pitcher for 2026.
Kelly did not impress but will likely get another long look in 2025.
Hicks might have an inside shot at a slot on the 26, but only because he's out of options, gets paid $12M a year and throws near 100 mph.
I won't go into all the SP'ers who may be converted to pen arms or used in the pen temporarily, but there could be some impressive skillsets available.
I'm pretty confident in our 2026 pen outlook, despite losing Wilson, Matz and a few others.