Toppin (quadriceps/not with team) is out for Thursday's Summer League game against the Grizzlies, Brad Rowland of the Locked On Podcast Network reports.
Toppin will miss another matchup while away from the team. It's not clear if he's also still dealing with a quadriceps issue, which is what forced him out of Monday's game, but his availability will be worth keeping an eye on as Summer League comes to a close.