Grice, a graduate of Oklahoma's Harrah High School and a highly recruited wrestler, was apparently off duty from his other job as police officer when he was hit from behind at a red light in Pottawatomie County in Oklahoma on the evening of Sept. 8.
More details will continue to emerge as the night goes on. He is currently in critical condition at OU Presbyterian in Oklahoma.
"@mattgricemma is still in surgery to alleviate bleeding and swelling on his brain. Will be ICU after," Bryan O'Rourke tweeted.
Grice, a UFC fighter who competes in the UFC's featherweight division, is also a graduate of Oklahoma University, where he was a standout wrestler.
At Harrah High school, Grice was a four-time Oklahoma State Wrestling Champion, winning Outstanding Wrestler three times, a feat which has never been accomplished by any other competitor.
After his senior season, Grice was the most highly recruited wrestler in the nation at his weight.
He decided on the University of Oklahoma, where he graduated with a Bachelor's Degree in sociology.
After graduating from college, Grice made the natural progression from wrestling to MMA.
He had a knack for the sport from day one, as he won nine straight fights before getting the call to compete in the UFC in 2007.
Grice has dropped two of his last three UFC fights, but he was expected to fight Jeremy Larsen on Oct. 19 at UFC 166.
Obviously that fight now seems to be in jeopardy being that Grice was involved in a serious car crash.
Fight fans should keep Grice in their prayers this evening.