Marvin Harrison Jr. adds more muscle, hoping to make Year 2 leap for Cardinals

Marvin Harrison Jr. had a productive debut season with the Arizona Cardinals for several reasons, including elite athleticism, height and professional pedigree thanks to his dad's success in the league.

Now the young Cardinals receiver has two more things he believes will be useful entering his second season: noticeably larger left and right arms. The 22-year-old Harrison talked with reporters on Monday at the team's practice facility in a sleeveless shirt, showing off an impressive change in physique since January. 

Gone was the slightly skinny rookie, who played at 209 pounds. In his place was somebody who looked much more likely to impose his will on NFL defensive backs.

"I definitely put on some pounds," Harrison said, grinning.

Harrison hasn't committed to the newfound bulk, wondering how it will feel as the Cardinals embark on their offseason workouts. He's open to gaining more weight — or even potentially losing some — depending on results.

"Obviously, football is a physical game," Harrison said. "A lot of contested catch situations, run after catch, things like that. So I want to see how things play out during OTAs, training camp and see where it goes."

Harrison had huge expectations coming into his rookie season after being the first non-QB selected with the No. 4 overall pick in last year's draft. In a lot of ways, the Ohio State product delivered with 62 catches for 885 yards and eight touchdowns — eerily similar numbers to his dad's stats as a rookie. Marvin Harrison Sr. recorded 64 catches for 836 yards and eight touchdowns in 1996 for the Indianapolis Colts and went on to a Hall of Fame career. 

But for all the big moments from Harrison Jr. last season, there were also some quiet Sunday afternoons. Harrison