Bolsinger's insertion into the rotation gives the Dodgers six starters, and either he or Mat Latos could pitch Wednesday on normal rest.
Latos has struggled since joining the Dodgers at the Trade Deadline. He is 0-2 with a 6.56 ERA and a 1.54 WHIP.
Latos publicly questioned manager Don Mattingly's decision to remove him Thursday night after he had allowed four runs and eight hits in four innings. Mattingly said Latos approached him to clarify the comments Friday, and the Dodgers skipper didn't seem upset by them.
"I never mind guys wanting to stay in the game," Mattingly said. "I still have to make decisions. I'm just trying to win a game, and I'm trying to put us in the best position."
Asked who will get the start Wednesday, Mattingly said: "There's a lot of factors, not just [Bolsinger], of which way we go -- even matchups for different teams and things like that. We're talking about the rotation a lot, and we're trying to set it up the best way."
Regardless of whom the Dodgers choose, the prevailing sentiment in the clubhouse is that the club picked the right time to give its starters an extra day off. The Dodgers are in the midst of a stretch with 16 games in 16 days. Plus, Plus, Kershaw (132 pitches) and Greinke (114 pitches) worked very deep into high-leverage starts against the Giants earlier this week.
"Right now, it's the right time," said Anderson. "It just worked out perfectly with the pitches we've thrown. With the way our horses have been throwing, they definitely deserve an extra day."
Anderson is the biggest beneficiary of the move. Because of off-days the next two Thursdays, Anderson will start with five days' rest in each of his next three outings.
"The two guys at the top have thrown a ton of innings, and I've thrown more innings than I have in the past four to five years," Anderson said. "So it just lets you recover a bit, lets your body recover, and hopefully it lets everything come back crisp."
AJ Cassavell is a reporter for MLB.com. Follow him on Twitter @ajcassavell. This story was not subject to the approval of Major League Baseball or its clubs.