"This whole series, I might play Ruf, while Peter is kind of working on a different approach at the plate," Phillies manager Pete Mackanin said.
Bourjos, who had game-tying and game-winning hits Wednesday against the Mets at Citizens Bank Park, entered the series against the Brewers hitting .191 (9-for-47) with five doubles, three RBIs and a .506 OPS in 15 games.
"We're trying to get him moving to the ball instead of rotating around the ball," Mackanin said. "So we're going to work on that for maybe two or three days, because Ruf can help us offensively. But I can't afford to wait for a lefty, because we haven't seen really many lefties. I'm kind of forcing the issue."