HUNTINGTON, W.Va. -- Marshall running back Tron Martinez, the team's leading rusher in 2011, is done with football for the Thundering Herd.
The junior told his Twitter followers Monday afternoon that his Marshall career was over.
"im (sic) crushed," read one tweet, the next reading, "no more football, at marshall."
Marshall spokesman Jason Corriher said Martinez has been medically disqualified. His scholarship will be honored if he chooses to stay at Marshall.
Martinez gained 649 yards and scored three touchdowns on 160 carries two seasons ago, but knee problems kept him off the field in 2012. He underwent offseason knee surgery, and was on the field for the first day of preseason practice, but never played. Coach Doc Holliday said Sept. 18 that the running back's injuries would probably keep him out for the year.
Martinez joined the Herd as a non-scholarship walk-on in 2010. During his freshman year, he started three games and rushed for 262 yards and a touchdown on 78 carries. He earned a scholarship as a sophomore.
Martinez's departure would be the second one for a Marshall running back in recent days. Travon Van, the second-leading rusher in 2011 who began this season as the Herd's starting running back, told the Missoulian newspaper in Missoula, Mont., that he was transferring to the University of Montana.
Van began at running back, moved to reserve cornerback after the third game of the season, came in at corner against Rice and did not play the rest of the year. Holliday said it was due to an unspecified injury. It was mentioned on Twitter by Van and with reporters by Holliday that Van's mother was seriously ill. Van told the Missoulian he was joining the Grizzlies to play offense.
Despite Martinez's absence and Van playing sparingly at running back, the Herd had the fourth-best rushing offense in Conference USA, averaging 169.2 yards per game. Freshman running back Kevin Grooms was named the C-USA freshman of the year after rushing for 737 yards and eight touchdowns. Marshall averaged just 120.1 rushing yards in 2011, ninth-best in the conference.
Contact sportswriter Derek Redd at derek.r...@dailymail.com or 304-348-1712. His blog is at blogs.dailymail.com/marshall. Follow him on Twitter @derekredd.