How 49ers QB Purdy developed physically during healthy offseason

SANTA CLARA — Quarterback Brock Purdy returned to the 49ers facility this week slightly bigger physically after a fully healthy offseason. This is nothing new to coach Kyle Shanahan, who shared the Nick Bosa-inspired moniker given to the 49ers quarterback. "We always joke about his 'Baby Bosa Legs,' " Shanahan said on Wednesday. "He builds those up and gets his strength. Brock works really hard in the offseason, and is always improving each year. The work ethic he has, mentally and physically, and he continues to get better." Purdy enjoyed the first full offseason of his three-year NFL career, not needing to worry about training for the NFL Scouting Combine or rehabbing an injury. He worked out with his throwing coaches in Jacksonville, Fla., and enjoyed the time preparing for the season. "Last year a lot of it was rehabbing my arm, and trying to get my arm healthy while trying to work out as well," Purdy said on Wednesday. "This year I actually had some time to work on my craft and my body. I feel like it's really like anybody else too, offseason right before camp everyone gets after it and tries to get in the best shape as they can." It's not just about bulk for Purdy, who...