On top of that, Collins is playing in an offense with several other key contributors in Joe Mixon, Tank Dell, Nick Chubb and Dalton Schultz, behind what projects to be a lackluster offensive line.

He has plenty of playmakers around him now, too. CeeDee Lamb is one of the league's premier pass-catchers, and he's now surrounded by George Pickens and Jalen Tolbert. Throw in tight end Jake Ferguson, and Prescott won't be hurting for quality receiving options.

Brian Robinson Jr., in his 49ers practice debut, rotated in with Christian McCaffrey in an hour-long, no-pads practice.

Robinson has rushed for 2,319 yards and 15 touchdowns in his first three NFL seasons. He's coming off a career-high eight touchdowns rushing and 4.3 yards per carry ahead of his first year with San Francisco.

With the NFL season just around the corner, San Francisco 49ers running back Christian McCaffrey is set to make his highly anticipated return to the field