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

Josh Lowe has returned from AAA and appears to be ready to take over the CF job in Anaheim.
Jul 1 2026 3:07am
Trent Grisham's looming return could remove either Spencer Jones or Jasson Domínguez from the Yankees' outfield. Plus, a new look infield in BOS, Dean Kremer nearing a return for BAL, and more.
Jun 30 2026 3:05am
This week, we discuss the return of Heliot Ramos to a crowded lineup situation in San Francisco, and the playing time outlook for prospects throughout the NL West.
Jun 27 2026 3:06am
Andrew Painter must hone his technique back in the minors before we can expect to see any MLB masterworks. Plus: 3B in WAS; SP in ATL; C/DH in MIA; 2B at NYM; more.
Jun 26 2026 9:56am
The Cubs are hoping Peterson can help stabilize a rotation battered by injuries.
Jun 26 2026 3:05am

Tools