Thursday night in Las Vegas, MTV host, and BMX Bike Star T.J. Lavin crashed his bike while going over a dirt ramp. Lavin was apparently trying to complete a high jump, when he lost control of his bike and fell over the handlebars. He was immediately rushed to the Las Vegas University Medical Center.

The extent of the injuries are not entirely known, but it has been confirmed that he is in critical condition . According to reports, he has shattered one of his wrists and broke several ribs. Doctors have been forced to put the 33-year-old Lavin into a medical induced coma.

T.J. Lavin has hosted 10 seasons of the Real World/Road Rules Challenge on MTV, from 2005 through 2010. He has also made an appearance on MTV’s Cribs, and even has a video game named after him.

Lavin has won hundreds of BMX events throughout his career. He started riding at age 2, and has won competitions at the X Games and Dew Action Sports Tour, among others. He holds 3 Gold Medals from the X Games alone.