The morning after his general manager challenged him to show up and prove something in training camp, Bucs defensive end Da'Quan Bowers said he knows he must be more than he's been in his first three NFL seasons. "No question about it, I owe it to this organization, owe it to this team. I've been here long enough, and I haven't really been that player that I know I can be," he said. "I think it's time I really put forth that extra foot, to be that player that I know I'm capable of being." Bowers totaled just seven tackles last season and underwent knee surgery after being sidelined at the end of the year. Bucs general manager Jason Licht said Wednesday night that he had to be "blunt" about Bowers showing his commitment to playing at the NFL level. In three seasons, the former second-round pick has totaled 5.5 sacks but said he's now physically in the best shape he's been.