Kyrie Irving

Cavaliers rookie Kyrie Irving has his first NBA injury — a concussion.

The star guard, who has lived up to being the No. 1 pick in this year’s draft, was kept out of Wednesday night’s game against the Los Angeles Clippers with a head injury. The team did not disclose Irving’s concussion until moments before tip-off. There is no immediate timetable for his return.

The Cavaliers said in a release that Irving was kneed in the head during the fourth quarter of Tuesday’s game at Miami. He complained of a headache after the game and that it worsened overnight and while he warmed up on the floor Wednesday.

Irving was evaluated by Cleveland’s medical staff, and team physician A.J. Cianflocco diagnosed the 19-year-old with a concussion shortly before the game.

– Reported by theĀ Associated Press