Dunn has a 4.66 ERA across 48.1 innings with the Rockies in 2017. Dunn has disappointed in his first year with the Rockies after posting a 3.40 ERA last year with Miami. In his last seven appearances out of the bullpen, he has gotten rocked for seven runs over 7.1 innings pitched. Despite his recent struggles, Dunn remains a key piece in the bullpen and he will need to pitch some important innings down the stretch for the Rockies as they hope to clinch a playoff berth.
Dunn entered the All-Star break with a 5.40 ERA and a 1.66 WHIP in 28.1 innings pitched. The veteran southpaw does have some bright spots to his name this season, as his 11.8 K/9 is the second-best mark of his career and his last three appearances before the break have been scoreless. That's where the positives end, however, as he's allowing over two home runs per nine innings and is walking batters at his highest rate since 2012. Dunn still seems to be in line for a good number of holds moving forward, but primary setup duties seem to have shifted to Jake McGee and Adam Ottavino at this point, limiting Dunn's fantasy appeal until he can keep the ball in the park consistently.
Dunn has a 8.36 ERA and 2.14 WHIP over 14 innings since the start of May. The left-hander started the season by not allowing a run in his first nine appearances and recorded six holds in the process, but the wheels have since fallen off. Dunn's 0.48 GB/FB especially spells trouble at Coors Field, where opponents are batting .378 against him with three home runs over 8.1 innings. The 32-year-old's lone bright spot at the moment is his K/9 of 11.6.
Dunn gave up two runs on two hits and a walk in just one-third of an inning Wednesday against the Phillies. After an utterly dominant month of April, the southpaw has been shaky throughout the month of May. After allowing just one run in all of April, Dunn has allowed eight earned runs in just 6.1 innings of work, ballooning his ERA to 5.79 on the season. He continues to strike batters out at a nice clip (11.6 K/9) and has 10 holds to his name, however, so he still has some value in deeper leagues in the event that he breaks out of his current slump on the hill.
Dunn (back) was activated from the disabled list Wednesday. Dunn will be a welcomed return to the Rockies' bullpen; the 31-year-old had posted a 1.17 ERA and 10:2 K:BB across 7.2 innings (10 games) with his new team before hitting the disabled list with back spasms. The southpaw should immediately factor back in as an important piece of Colorado's bullpen. Carlos Estevez was optioned to Triple-A in a corresponding move.