Jhoulys Chacin had a rough go of it against the Padres on Thursday, allowing five runs on seven hits over 5 1/3 innings.
Jhoulys Chacin surrendered five runs in six innings Saturday in a no-decision versus the Dodgers.
Jhoulys Chacin struck out nine while allowing two runs in seven innings Monday against the Astros.
Jhoulys Chacin surrendered eight runs in 5 1/3 innings Thursday in a loss to the Giants.
Jhoulys Chacin allowed two runs in five innings Saturday in a loss to the Cardinals.
Jhoulys Chacin allowed five runs on eight hits and three walks over seven innings in Sunday's loss to the Rays.
Rockies activated RHP Jhoulys Chacin from the 15-day disabled list.
Jhoulys Chacin (back) is on track to be activated from the disabled list to start Sunday against the Rays.
Jhoulys Chacin (back) threw a successful bullpen session on Saturday and remains on track to return to the Rockies' starting rotation on May 5.
Jhoulys Chacin (back) is scheduled to throw a bullpen session on Saturday.
Jhoulys Chacin (back) expects to be activated from the disabled list when first eligible on May 5.
Rockies placed RHP Jhoulys Chacin on the 15-day disabled list, retroactive to April 20, with a lower back strain.
Jhoulys Chacin will miss his next scheduled start and maybe more with a sore left oblique.
Jhoulys Chacin was sent for an MRI on his sore left oblique.