PT TOMORROW: NL West—Is all well in the ARI bullpen?

Arizona Diamondbacks

After hitting a rough patch in May, the Diamondbacks have resumed with their winning ways in June, thanks in part to a bullpen that leads the majors with a 2.55 ERA. Named as the team’s closer at the end of spring training, Brad Boxberger (RHP, ARI) has rewarded the Diamondbacks (and fantasy owners) with 14 saves in 16 chances, with a tidy 2.70 ERA (3.09 xERA), 12.3 Dom, and 147 BPV through 23 IP. But as pointed out in Brian Rudd’s FACTS/FLUKES column about a month ago, there were some warning signs that Boxberger was, to a certain extent, over-performing. Specifically, Boxberger’s 9% SwK, while acceptable, did not support the 12.0 Dom he was sporting at the time. 

Boxberger has been a bit on the shaky side of late,...

Almost!

You’re just a few clicks away from accessing this feature and hundreds more throughout the year that have a singular goal in mind: Winning your league. Subscribe to BaseballHQ.com here!

Already a subscriber? Sign in here

More From PT Tomorrow

Miami's rotation has sustained casualties and attrition, leaving a thinned-out platoon—and opportunity. Plus: Manaea at NYM; prospect SS in PHI; prospect SP in WAS; SS in ATL; more.
Jun 3 2026 10:15am
With Max Muncy returning from the IL, the A's will need to shuffle up the lineup, meaning Zack Gelof could be changing positions again.
Jun 3 2026 3:06am
Since receiving treatment for vertigo, Nathan Lukes has turned his season around, strengthening his case for playing time. Plus, Colton Cowser's resurgence in BAL, and more from around the AL East.
Jun 2 2026 3:05am
Ezequiel Tovar tries to find his old promise, Harrison Bader once again proves to be sneakily valuable, a Diamondbacks prospect finds his way to the majors, and the Dodgers and Padres try to find answers to infield questions.
May 30 2026 3:06am
Which hitters are trying to earn an everyday role in Pittsburgh?
May 29 2026 3:11am

Tools