Jhoulys Chacin said Saturday that his arm "feels better than it has in a year and a half."
Rockies and RHP Jhoulys Chacin avoided arbitration by agreeing to a one-year, $5.5 million contract.
Rockies activated RHP Jhoulys Chacin from the 60-day disabled list.
Jhoulys Chacin (shoulder) threw a bullpen session on Tuesday.
Jhoulys Chacin (shoulder) is 2-3 weeks away from playing catch.
Jhoulys Chacin (shoulder) won't need surgery, but will be shut down for 4-6 weeks.
Rockies transferred RHP Jhoulys Chacin from the 15-day disabled list to the 60-day disabled list.
An MRI revealed that Jhoulys Chacin has a strained right rotator cuff and fraying in the front of his labrum.
Rockies placed RHP Jhoulys Chacin on the 15-day disabled list with right shoulder inflammation.
Jhoulys Chacin admitted after Saturday's start to being concerned with his lack of arm strength so far this season.
Jhoulys Chacin fell to 1-7 after yielding seven earned runs in 5 2/3 innings Saturday to the Brewers.
Jhoulys Chacin dropped to 1-6 after giving up five runs in six innings Monday against the Cardinals.
Jhoulys Chacin yielded three runs and seven hits in six innings Tuesday in a loss to the Dodgers.
Jhoulys Chacin finally won for the first time this season by blanking the Braves for seven innings on Thursday.