Now rookie Tim Hardaway Jr. is truly a Knick after being hit by the team’s injury jinx yesterday. After a brilliant first quarter in the Knicks’ Las Vegas Summer League game against the Wizards, Hardaway sat out the rest of the game with a sprained left wrist, and there’s a chance he’ll miss today’s final game of the preliminary round against Steve Clifford’s Bobcats. There’s also the chance he won’t play again in Vegas. In his second game, Hardaway scored nine points in the first quarter, making 3-of-6 shots, including a 3-pointer and a monstrous driving dunk in the Knicks’ 82-69 victory. But Hardaway tumbled late in the quarter and injured his hand. X-rays were negative, and it’s unclear if he will have an MRI exam. “I tripped on a fast break, then I tried to break my landing and didn’t go well,’’ Hardaway said. “I’m fine now, with ice, letting it rest. I hope I’m ready to go [today]. I’m anticipating it.’’ The Knicks could rest Hardaway today and bring him back for the playoff round later this week. Asked if he needed any more tests, Hardaway said, “Whatever the doctors tell me to do. I don’t know right now.’’ Hardaway scored 13 points in his summer-league opener, but shot the ball even better yesterday before the injury. “I felt more confident, everything was going smoothly,’’ he said. “I was upset to come out and not play the rest of the game.’’ Even if Hardaway doesn’t resume his summer-league stint, it was enough to make a good impress on Knicks coach Mike Woodson.