Thunder reserve forward Nick Collison will miss tonight's game against Golden State with a sprained left ankle and will be listed as day-to-day thereafter. Collison suffered the injury in the first half against Portland on Sunday night, but did not leave the game. He also is recovering from a sprained right ankle suffered at Cleveland on March 13. Collison had 10 rebounds in the Thunder's last meeting against the Warriors on Feb. 13. Meanwhile, Thunder reserve guard Nate Robinson will be activated tonight for the first time since having arthroscopic surgery March 4 on his right knee. It is unknown if he will play.