Hawk suffered a broken rib, lost teeth, back injuries and several concussions during the 10 years he attempted the trick
Skateboarding legend Tony Hawk proves that he's still got it by
Tony Hawk Lands FIRST-EVER 900
The Tony Hawk 900: The Revolutionary Rotation — Board Blazers
LOOK: Tony Hawk, 52, lands what may be his final 720
DID TONY HAWK STEAL THE 900? - Jenkem Magazine
Tony Hawk Reflects on Landing the 900, Skateboarding's Holy Grail
LOOK: Tony Hawk officially retires iconic Ollie 540 trick, breaks
Tony Hawk's first ever 900!
Tony Hawk's 900 Spin Was Amazing. An 11-Year-Old Skateboarder
Why was the 900 such a big deal when Tony Hawk did it? - Quora
Tony Hawk becomes world's first skateboarder to complete 900 trick
DID TONY HAWK STEAL THE 900? - Jenkem Magazine