Chafin was placed on the 15-day DL with left shoulder tendinitis on Wednesday. Chafin will hit the DL to recover from his shoulder injury while the Diamondbacks bring up relievers Dominic Leone and Zac Curtis to bolster the bullpen. The 26-year-old has been awful through 32 relief appearances this season, putting up a 6.75 ERA and 1.46 WHIP. He will look to bounce back after his return from the DL.
Chafin was recalled by the Diamondbacks on Wednesday. The left-hander struggled during his earlier stint with the Diamondbacks this season, working a 9.00 ERA with 34 strikeouts and 19 walks across 44.5 innings of work. However, he turned things around a bit at Triple-A Reno, throwing 7.2 scoreless innings over five separate appearances, including one start. He'll join the Diamondbacks on Wednesday, taking the roster spot of Zac Curtis.
Chafin was optioned to Triple-A Reno on Friday. With a 9.00 ERA and 1.77 WHIP in 23 appearances, the D-backs opted to replace Chafin in their bullpen with a series of moves prior to the start of their weekend series with the Padres. If he can turn things around at Reno, Chafin could be back in the fold with the D-backs in a few weeks.
Chafin gave up three hits and three earned runs in just 0.2 innings of work in Tuesday's loss to the Pirates, and his season ERA rose to 7.88. Chafin wasn't the only Diamondbacks pitcher to get roughed up, as the staff allowed 12 earned runs. However, the lefty's struggles are a bit perplexing after he posted a 2.76 ERA in 2015 across 75 innings, which was most among the team's relievers. Still, his FIP sits at 2.94, suggesting his ERA will come down. Chafin remains Arizona's top left-handed option out of the bullpen.
Chafin came on in relief Wednesday against Miami and struck out the only batter he faced, J.T. Realmuto. This was a bounce-back appearance for Chafin, who walked two batters in Tuesday's appearance and suffered the loss. The lefty has primarily been used as a middle reliever this season and proven effective in short-inning situations. Chafin is the only left-hander seeing consistent usage out of the Arizona bullpen and he should continue getting opportunities despite a 4.22 ERA.