Holmberg has been pegged for the start for a few days, so the move isn't a surprise. He's posted a 4.64 ERA over 87 1/3 innings at Triple-A.
Bailey did have a PRP injection to combat the injury. He's been sidelined since August 7 with elbow and neck issues. Bailey had a 3.71 ERA over 145 2/3 innings prior to the injury.
Doubront, who is working his way back from a calf injury, has yet to pitch in a game for the Cubs since being acquired. He has allowed six runs in 10 innings so far on his rehab assignment.
Jackson was chased in the third inning of his start Wednesday after allowing eight hits and seven runs, and it appears the injury is at least part of the reason. The team had discussed moving him to a bullpen role after Wednesday's outing, but that decision will have to wait until after this injury heals. At this point, there is no timetable for his return.
Jackson has struggled mightily this season even before the injury, with his ERA ballooning to 6.09 in 26 starts.
Stults (6-13) moved to 3-0 over his last four starts, and he's only allowed four earned runs in 24 2/3 innings during that stretch. Wednesday's sole run came on a third-inning sacrifice fly, and the San Diego starter also managed to deliver his own RBI single in the second inning. Stults owns a 4.53 ERA and 86:34 K:BB ratio in 135 innings. He's scheduled to face the Brewers Monday.
Hernandez (7-9) surrendered just three hits in six innings in each of his first two starts with the Dodgers, but he couldn't find that groove Wednesday, though all eight hits allowed were singles. He owns a 3.78 ERA and 87:61 K:BB ratio in 138 innings. Hernandez is scheduled to face the Diamondbacks Tuesday.
"We're going to assess and evaluate and see where we go," manager Rick Renteria said.
Jackson has turned in just two quality starts in his last nine outings, going 1-6 during that stretch and watching his ERA rise from 4.99 to 6.09.
"No one wants to be moved," Jackson said Wednesday. "The only thing you can do if you don't like it is go out there and pitch out of jams. I have to get back to having fun. Tonight was an example of absolutely not doing that. Just being uptight and battling yourself."
Lynn (14-8) was only at 94 pitches after seven innings, but a weather delay cost him the chance to go deeper into the game. He's surrendered more than two earned runs just once in his last nine starts going back to the beginning of July, and in that off game he only gave up three earned runs in 5 2/3 innings. Lynn owns a 2.78 ERA and 144:57 K:BB ratio in 158 2/3 innings. He's scheduled to face the Pirates Tuesday.
Cueto (15-7) had won each of his last five starts before the streak came to a halt Wednesday, when he allowed a three-run double with the bases loaded in the fifth inning and left the bases loaded again the top of the sixth at the time of his removal. It was his worst start since giving up six earned runs on May 20. Cueto owns a 2.24 ERA, 0.94 WHIP and 191:53 K:BB ratio in 192 2/3 innings. He's scheduled to face the Cubs Tuesday.