So is it injury, or effort?
Did he quit on his team? Or does he require sugery?
It was evident during the 2013 season opener against North Carolina that Clowney's conditioning was subpar. His snap count didn't warrant him being as tired as he was and he clearly took some plays off. Sources told WalterFootball.com Clowney lacked a good work ethic in his conditioning and took a significant amount of plays off last year. However after the opener, Clowney's effort and conditioning was a lot better the rest of the season after he took some criticism.
Clowney has totaled 35 tackles, three sacks, 10.5 tackles for a loss, two passes defended and a forced fumble in 2013.
The 6-foot-6, 272-pounder has the athletic talent to be a special player. The scary part is how good he could be if he develops an inner drive and a work ethic.