Caleb Moore, an innovative freestyle snowmobile rider who was injured in a dramatic crash at the Winter X Games in Colorado, died Thursday morning. He was 25.

Moore had been at a hospital in Grand Junction since the crash in Aspen one week before. Family spokeswoman Chelsea Lawson confirmed his death, the first in the 18-year history of the X Games, which is produced by ESPN.

A former all-terrain vehicle racer, Moore switched to snowmobiles as a teenager and quickly rose to the top of the sport. He won four Winter X Games medals, including a bronze last season when his younger brother, Colten, captured gold.

Caleb Moore was attempting a backflip Jan. 24 in the freestyle event when the skis on his 450-pound snowmobile caught the lip of the landing area, sending him flying over the handlebars. Moore landed face first into the snow with his snowmobile rolling over him.

Moore stayed down for quite some time, before walking off with help and going to a hospital to treat a concussion. Moore developed bleeding around his heart and was flown to a hospital in Grand Junction for surgery. The family later said that Moore, of Krum, Texas, also had a complication involving his brain….