A year ago, Isaiah Thomas was the key player on a Celtics team poised to enter the playoffs as the No. 1 seed in the East and he was talking about the C's having to "back up the Brink's truck" to give him a max contract. Thursday, after playing for the Cleveland Cavaliers and Los Angeles Lakers this season, he'll have arthroscopic surgery on his troublesome right hip, ending a whirlwind season. MEDICAL UPDATE: Isaiah Thomas will undergo arthroscopic surgery to his right hip tomorrow, it was announced today.