"Hard to say, I would guess we would know more [Monday]," Reds manager Bryan Price said of how long LaMarre might be sidelined. "I don't know for sure. He'll know a bit more [Monday], but I don't anticipate him playing in the next few days."
LaMarre had an eventful afternoon, as he committed a crucial throwing error and threw a runner out at the plate in Milwaukee's five-run fifth inning.
With runners at first and second and nobody out, Nevin Ashley tapped a comebacker to Reds starter Anthony DeSclafani, who threw a potential double-play ball into center field. LaMarre's throw to third base sailed into the Reds' dugout, allowing two runs to score.
The Reds have also been playing without starting center fielder Billy Hamilton, who is expected to rejoin the team Monday in St. Louis in a strictly pinch-running role. Hamilton has been limited by a right shoulder strain.
Andrew Gruman is a contributor to MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.