Jeremy Wariner during the 2010 USA Outdoor Track & Field Championships at Drake Stadium on June 26, 2010 in Des Moines, Iowa.
Three-time Olympic gold medalist Jeremy Wariner's hopes of Olympic glory in London were dashed Wednesday when an MRI confirmed the Arlington track star tore his hamstring.
Wariner told NBC 5's Brian Curtis, in London covering the Olympics, that he thinks he tore it Friday. Wariner said he first thought his muscle was just tight, but the tear was confirmed by an MRI.
Wariner said he is done for the season.
Wariner was tapped for the Team USA's 4x400-meter relay pool after LaShawn Merritt left London for treatment of a injured left hamstring. Merritt pulled up in his 400-meter heat Saturday after feeling a twinge in his leg.
Wariner hoped for a repeat of Beijing where he ran the last lap to bring home gold in 2008.
Team USA has won every 4x400 Olympic relay they have competed in since 1976.