New England Patriots linebacker Jamie Collins was a regular on "breakout" candidate lists at this time last year, and his excellent 2014 season reflected how he matched the hype.
The 6-foot-3, 250-pound Collins pretty much did it all on the field, and just in case there was any lingering question about his athleticism, he posted an Instagram video on Thursday in which he does eight consecutive back hand springs before finishing with a full rotation.
