Derrick Rose scrimmaged 5-on-5 without issue for the second time in three days, continuing the post All-Star break plan the team laid out last week for his rehabilitation from left knee surgery. Typically, teams don't scrimmage much at this point of an NBA season. In a nod to this dynamic, coach Tom Thibodeau held starters Joakim Noah, Kirk Hinrich, Carlos Boozer and Richard Hamilton out of this portion. With back-to-back games this week, this could be the last scrimmage opportunity until next week. Rose said last week he has yet to take a hit on his surgically repaired knee but isn't afraid of that development. "We're not saying it's mental or physical," Thibodeau said of Rose's return. "He just has to continue to work on his rehab and keep concentrating on that. When he's ready to go, we'll know. And then he'll go. There's no timetable." Asked if Rose is game ready, Thibodeau repeated the organizational stance that Rose must endure practice "for an extended period of time" before contemplating game action. "He's making good, steady progress," Thibodeau said. "He's right where he should be. There has to be an understanding that in practice you're striving to get to a game-like intensity. And you're never going to get there. There's a whole different level to playing in an NBA game. He's doing fine. He just has to continue to work on his rehab." Rose also has acknowledged it's possible he could sit all season. Wear and tear: Thibodeau called sitting Hamilton out of the scrimmage "precautionary." Hinrich and Noah, who have battled nagging injuries, said they're playing Thursday against the Heat. Boozer left the practice court before reporters were granted access.