Casey said before Friday night's game that Lowry has no restrictions and will play ''until he gets tired.''
Lowry is averaging 18 points and seven assists and has been shooting 41.4 percent from the field this season. However, his production dropped off after the All-Star break, shooting less than 30 percent.
Casey isn't sure how much Lowry will play.
''Some players it takes a couple of games to get their sea legs back,'' Casey said before the game. ''Kyle has been working. It's not like he's not been doing anything.''
The Raptors went 1-2 without Lowry. They've lost six of their last seven games.