Keep in mind, several players did not participate in today's practice, players such as rookie first-round pick Mykel Williams, who injured his ankle on Monday, according to the team. Williams played through an ankle injury all of last season. It's unclear if he has injured the same ankle. More on him in a minute.

The San Francisco 49ers completed their second block of practices during training camp. First-round pick Mykel Williams did not practice on Tuesday due to a “minor ankle” injury, according to the team.