The Rockies are replacing veteran Livan Hernandez with rookie Greg Reynolds in their rotation.
Manager Clint Hurdle announced the move Thursday, one day after Hernandez gave up four runs and eight hits in 4 1-3 innings during a 9-5 loss to the Atlanta Braves. Hernandez is 1-3 with a 9.85 ERA.
Hurdle said he told him the team was making the change because they weren't getting the results they wanted. But he added that it wasn't because of a lack of effort from Hernandez.
Reynolds was recalled on September 2nd and struck out two of the three batters in a perfect inning last night, his first career relief appearance.
Reynolds is expected to start on Monday at San Diego.