The Virginia Tech–West Virginia football rivalry is an American college football rivalry between the Virginia Tech Hokies and West Virginia Mountaineers. They met 51 times between 1912 and 2005. The two teams played as conference foes from 1991 to 2003 as members of the Big East Conference (1979–2013). They met every year from 1973–2005. The Black Diamond Trophy is the trophy that goes to the winner of the game. It was introduced in 1997 and was meant to symbolize the Appalachian region's rich coal heritage (the phrase "black diamond" is often used as a term for coal.)