All-Star point guard Kyrie Irving will miss three to four weeks with a sprained left shoulder after Cavaliers practice on Monday at Cleveland Clinic Courts. Irving suffered a sprained AC (acromioclavicular) when he took a hip check from rookie Jonas Valanciunas with 2:04 left in the third quarter on Sunday in Toronto. X-rays taken in Toronto were negative, but Irving, who had to have help putting a sweatshirt over his head in Toronto after the game, was to have more tests today in Cleveland. Irving, who broke a bone in his right hand during summer league, has missed 14 games this season, 11 with a fractured left index finger from Nov. 21 to Dec. 8 and three with a sore/hyperextended right knee from Feb. 26 to March 1. He did play through a fractured in his jaw bone in mid-December. He missed 14 games with injuries last season, 10 with a sprained right shoulder, 3 with a concussion and 1 when he was ill. He also sat out the last game of the season.