The Colorado Rockies are losing a key piece of their bullpen for what they hope will be a very short period of time.
Colorado has placed left-handed reliever Mike Dunn has been placed on the 10-day disabled list with back spasms. Dunn has not pitched since appearing against the San Francisco Giants on April 22. The move is likely retroactive to Sunday, April 23.
Dunn has been one of the reasons for Colorado’s bullpen resurgence in 2017. In his first season with the Rockies, the 31-year-old southpaw has posted a 2-0 mark and has allowed one run in 7.2 innings of work stretching over 10 games. He has also struck out 10 while walking just two batters.
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The April 22 outing against San Francisco was the first time that Dunn had allowed a run all season. In one-third of an inning pitched, the Giants touched him for two hits and the run.
Prior to that, however, Dunn was almost untouchable in the late innings for Colorado. He saw action in three of the Rockies’ first four games in Milwaukee, establishing himself as a go-to pitcher out of the bullpen for manager Bud Black in close late-inning situations.
Taking Dunn’s place in the bullpen and on the active roster is veteran Chad Qualls, who was 2-0 with a 5.23 ERA in his first season with the Rockies last year. He has been sidelined since early March with tightness in his right forearm.
Qualls has been working in Triple-A Albuquerque to get back to Denver and Colorado’s 25-man roster. In six games with the Isotopes, Qualls allowed five hits and one run over five innings of work. He walked one and struck out five during that time.