X Games Austin results, Day 4: Bob Burnquist adds another gold medal in Big Air

Day 4 at the 2015 Summer X Games in Austin debuted the Skateboard/BMX Big Air Doubles event, a tandem event featuring four teams made up of two people -- a BMX rider and a skateboarder -- performing tricks on the MegaRamp, gap and quarterpipe. Morgan Wade and Bob Burnquist took home the inaugural gold with a combined score of 90.00, besting the duos of Steve McCann and Elliot Sloan (silver medalists with 80.00 points), Zack Warden and Tom Schaar (bronze, 70.00 points), and Colton Satterfield and Jake Brown (fourth, 49.00 points).

Burnquist solidified himself as the most decorated X Games athlete ever, earning his 29th medal at the event. He did so while skateboarding with a broken arm he suffered while preparing for the X Games.

The Off Road Truck Racing event featured another legend, though one who isn’t well known on the extreme sports circuit. Rusty Wallace, a Hall of Fame NASCAR driver, participated in the event at 58 years old. He competed admirably, but ultimately couldn’t make it out of heats. With a time of 8:11.923, Sheldon Creed won the event ahead of Robby Gordon (silver) and Arie Luyendyk (bronze).

Gordon impressed the crowd by defying physics:

Later, Nyjah Huston made history by becoming the first person ever to win three straight gold medals in Skateboard Street. He has now won six of the last eight gold medals in the event at the Summer X Games.

Full results from Sunday:

Skateboard/BMX Big Air Doubles: Gold: Wade/Burnquist | Silver: McCann/Sloan | Bronze: Warden/Schaar

Off Road Truck Racing: Gold: Sheldon Creed | Silver: Robby Gordon | Bronze: Arie Luyendyk

Skateboard Street Men’s: Gold: Nyjah Huston | Silver: Chaz Ortiz | Bronze: Ryan Sheckler

Moto X Best Whip (decided by Twitter vote): Gold: Jarryd McNeil | Silver: Tom Parsons | Bronze: Todd Potter

Moto X QuarterPipe: Gold: Thomas Pagès | Silver: Levi Sherwood | Bronze: Josh Sheehan

Full results can be found at ESPN.com.