Quarterback Robert Griffin III did not participate in the Redskins’ organized team activities Thursday at Redskins Park but was on the field making throws as part of his rehabilitation from knee surgery.

Griffin dropped back and threw passes to wide receiver Pierre Garcon, tight end Fred Davis and other players also rehabilitating from injuries and not participating in the OTA.

Griffin’s throws were relatively crisp. He appeared to be able to plant on his right leg and deliver passes, although he and his receivers were moving at far from full speed. Griffin also did some running near the beginning of the offseason practice.

The Redskins began OTAs this week. This was the first session that was open to media members.

Griffin wore a brace on his right knee. He wasn’t in uniform and was dressed in a black long-sleeve shirt and burgundy shorts.

He underwent surgery in January for tears of his anterior cruciate and lateral collateral ligaments. It is not clear if Griffin, the NFL’s offensive rookie of the year last season, will be ready to practice in training camp in July or play at the outset of the regular season in September.