"Michael Crabtree not only was dressed for the start of Wednesday's practice, the 49ers wide receiver made it through to the end as well.

That's significant. It was Crabtree's first full practice since the 2010 season, and it increases the likelihood that the former first-round draft pick will at least be available to take part in Sunday's season opener against the Seattle Seahawks.

Quarterback Alex Smith said he also threw to Crabtree during a Tuesday walk-through session.

"It was good to see him out there running around," Smith said. "He's extremely talented. He's going to help us a ton.""