DENVER -- Saturday's bullpen session will be the determining factor for whether Rockies left-hander Jorge De La Rosa will join the starting rotation Tuesday in San Francisco.
De La Rosa, out with a left groin strain, threw 54 pitches in four innings during an injury-rehab start for Triple-A Albuquerque on Thursday night. On Friday, De La Rosa reported that he could feel tightness in the groin, but the question is how manageable it is.
"I think I will feel something all year, or that's what I hear," said De La Rosa, who has dealt with groin soreness in Spring Trainings past, though he said it was more daunting this year.
During the start, De La Rosa gave up one run on a homer. He mixed all of his pitches. De La Rosa said he wasn't happy with his fastball command but "it can come at any time -- I just have to work on those things in my bullpen [session]."
• While delighting in the sweep of the Brewers in the Opening Series, the Rockies can point to a couple of poorly executed hit-and-run plays Wednesday as areas of improvement.
Nick Hundley didn't offer at a second-inning pitch, and Brewers catcher Jonathan Lucroy easily threw out Corey Dickerson at second. With runners at first and third in the fifth, DJ LeMahieu swung over a low pitch and left Hundley, the trail runner, caught in a rundown. With two below-average runners -- Hundley and lead runner Nolan Arenado -- the rundown couldn't gain enough traction to trade a run for an out. But LeMahieu redeemed himself by singling Arenado home.
"We've got to execute on a daily basis, over the course of six months, and we're going to be good at executing," manager Walt Weiss said. "We're not going to do it to a success rate of 100 percent. But what I liked in Milwaukee was when we didn't execute, the guys behind them picked guys up."