Warriors guard Klay Thompson has been officially diagnosed with a concussion, the team announced in a release Friday morning: Klay Thompson has been diagnosed with a concussion, according to Warriors. He won't return to court until he's cleared by league protocol. — Rusty Simmons (@Rusty_SFChron) May 29, 2015 Thompson exited Game 5 of the Western Conference Finals after Houston's Trevor Ariza inadvertently kneed him in the side of the head. Thompson later returned to the bench, but suffered bleeding from his right ear. After participating in postgame celebrations, Thompson began to feel unwell and exhibited some concussion-like symptoms, prompting speculation Wednesday night and throughout the day Thursday that he'd sustained a