Lee, who injured his thumb on April 5 in Atlanta when he dove for a ball, is expected back in the lineup on Thursday in the series finale against the Milwaukee Brewers.
"If it were up to him, he'd play every day," Cubs manager Lou Piniella said of Lee, who was advised not to take batting practice on Wednesday to avoid reaggravating the thumb. "When you get that type of medical advice, you heed to it and that's it."
Lee needs one home run to become the 10th player to hit 100 regular-season homers at Wrigley Field. The group includes Sammy Sosa (293), Ernie Banks (290), Billy Williams (231), Ron Santo (212), Ryne Sandberg (164), Hank Sauer (118), Gabby Hartnett (115), Andre Dawson (110) and Hack Wilson (109).
Lee does not like to talk about injuries.
"I don't like revealing my weaknesses," Lee said, laughing.