Bush threw a normal side session before the Brewers' series finale against the Braves on Sunday at Turner Field to alleviate, but not eliminate, that doubt.
"I threw my normal side session like I would before a start," Bush said. "Everything feels fine. It felt normal."
Despite Bush's report, Brewers manager Ken Macha is holding off on declaring Bush ready to start Wednesday. That announcement probably won't come until Tuesday, the first day of the Colorado series at Miller Park.
"He threw today and he said he felt fine," Macha said. "But we don't know how he'll feel [Monday]."
Bush is scheduled to come in for treatment Monday at Miller Park during the team's off-day. If all goes well, he should be able to make his start Wednesday. If not, Yovani Gallardo could start on his regular four days' rest due to the off-day.
Macha said Bush's throwing session on Sunday went well, and that Bush's curveball was as good as it has been all season. So far this season, Bush is 3-2 with a 4.45 ERA.
The injury occurred in the first inning of Thursday's game against the Marlins. With two out in the first, Ramirez lined a ball off of Bush's elbow for an infield single. After being checked on by Brewers medical staff, Bush remained in the game. He pitched six innings but gave up four runs in the fourth inning to take the loss.
Adam Rosenberg is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.