The right-hander is 9-14 with a 5.61 ERA in 27 starts this season. He allowed four runs, eight hits and three walks in 5 2/3 innings and got the loss on Friday night against Texas.
As has been the case many times, a high pitch count hindered Jimenez's effectiveness. He threw a season-high 117 pitches and had baserunners in every inning except the fourth on Friday.
"He was very inconsistent early in the game," Acta said. "It really piled up his pitch count."
Acta would like to see Jimenez be more economical with his pitches, but so far, that hasn't happened. Jimenez has issued 84 walks in 154 innings.
"That's a goal with everybody who takes the mound, but, unfortunately, some guys don't have the same command of a fastball that others do like [Josh] Tomlin did when he was healthy," Acta said. "Ubaldo's not that type of guy. That's ideally what you want. You want a guy that when they're hitting 100 pitches to be in the seventh inning, not just getting out of the fifth."
Acta thinks Jimenez understands he needs to throw fewer pitches, but it hasn't shown up in the results.
"I don't think he's doing that on purpose," Acta said. "I think he wants to get out of the fifth with 50 pitches. The pitching coaches have worked with him. He understands he should be going deeper into the game to help his bullpen and to help us win. Believe me, no one wants to lose, and he doesn't want to go out there and have 100 pitches in the fifth."