But manager Ken Macha and the Brewers just want him in the lineup as soon as they can get him back.
As Washington second baseman Cristian Guzman drove a ball deep to right, Hart tracked it toward the right-field line and crashed into the wall as he attempted to catch the eventual foul ball.
Hart stayed in the game and finished out the top half of the inning, but was removed in favor of veteran outfielder Jim Edmonds, who pinch-hit for Hart in the bottom of the third and hit a decisive two-run homer in the seventh.
After leaving the game, Hart underwent X-rays and an MRI on his wrist, which revealed no fracture.
Brewers manager Ken Macha was unsure how long Hart would be out, but considering the way his right fielder has swung the bat since the middle of May, he certainly would like to have him in the lineup as soon as he can.
"He's day-to-day, as we all are," Macha said. "We've got other guys that can fill in. Edmonds won the game for us tonight. But [Hart] can have a sudden impact on the game at any time."
With Hart being the subject of a number of trade rumors this month, the injury could not have come at a more inconvenient time for the club, since any ailment or significant time missed complicates any trade discussions.
From his vantage point, though, Macha did not think the injury looked too significant.
He added that with the way Hart jammed his hand into the wall, the location of the injury required precautionary measures to be taken.
"When they were doing all the tests out in right field on him, it didn't look that bad," Macha said. "Where it was located, they were concerned there may be a small bone fracture in there, so they did the MRI."