Who is the first person to do a 900 on a Skateboarding Vert competition?

Rodny- Mullen is one of the old skateboarders Tony hawk tooo ^^

Skateboard legend Tony Hawk (USA) became the first person to achieve a '900' (two and a half airborne rotations) in competition at the ESPN X Games Five in San Francisco, California, USA on 27 June 1999. The so-called 900 (named after the fact that the skater spins two and a half rotations) is regarded as one of the most difficult tricks in vert skateboarding

 Tony Hawkfirst person to do a on a Skateboarding Vert competition is