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

The Mets are a hot mess, and the fact that they've been unlucky isn't quite enough to overlook how they've been flat-out bad--but it may still present buying opportunities. Plus: SP in PHI; C in WAS; 2B in ATL; RP in MIA; more.
Apr 27 2026 10:28am
We discuss Dalton Rushing's playing time probability moving forward, highlight a San Diego catcher with a real hit tool, and take a closer look at the Giants bullpen.
Apr 25 2026 3:05am
Montgomery has had some compelling K-BB% in the minors and is striking out a lot of batters this season
Apr 24 2026 3:06am
A look at the Salvador Perez situation in KC, which made headlines over the weekend. Plus, an update on Kyle Teel, CF playing time in DET, young arms in MIN, and when will the Guardians call up Travis Bazzana?
Apr 23 2026 3:05am
Oswald Peraza has had a nice start to the season, and he could add some improved offense to the infield.
Apr 22 2026 3:10am

Tools