Former Hawkeye Adrian Clayborn's NFL season is over

Chad Leistikow

Adrian Clayborn's 2014 NFL season was officially ended after one game Friday, when the former Hawkeye football star was placed on injured reserve by the Tampa Bay Buccaneers.

Tampa Bay Buccaneers defensive end Adrian Clayborn walks off the field during a Week 1 game against Carolina after suffering a torn biceps.

Clayborn suffered a biceps injury in Week 1 against the Carolina Panthers.

The injury is a huge blow to Lovie Smith's Buccaneers defense. Clayborn was expected to have a breakout year as one of the team's starting defensive ends.

Word began to circulate Friday that his season was ended in September for the second time in four pro seasons. Clayborn also missed the final 13 games of the 2012 season after suffering a knee injury.

Clayborn was one of the most revered Hawkeye defenders of the Kirk Ferentz era. He made the popular decision to return to Iowa for his senior season in 2010, bypassing the NFL. He was taken 20th overall in the 2011 draft by the Buccanners.

Ask any Hawkeye fan about Clayborn's defining moment as an Iowa player, and you'll probably hear about his blocked punt-and-touchdown in 2009 against Penn State, helping Iowa deliver a stunning road upset of the fifth-ranked Nittany Lions.