Jimmy Graham flies airplanes upside down.
So when quarterback Drew Brees says ''the sky is the limit'' for the third-year tight end out of Miami, he isn't kidding.
Graham says he isn't so much crazy as driven to do extraordinary things, as he has on the football field.
The former college basketball player made the Pro Bowl last season in only his second year in the NFL after leading the Saints with 99 catches for 1,310 yards and 11 touchdowns.
The 6-foot-7, 265-pound Graham says he's still ''just Jimmy,'' despite his surging fame and knows he still needs to improve.
Graham says he wants to get better at blocking and route running, and says he can count on Brees not to be shy about pointing out his mistakes.