HOUSTON, Feb 11 - Olympic gold medallist Jeremy Wariner anchored the U.S. team to an indoor 4x400 metres relay world record of 3:01.96 in Fayetteville, Arkansas on Saturday, USA Track & Field said on its website.
Kerron Clement, Wallace Spearmon, Darold Williamson and Wariner shattered the 1999 record of 3:02.83 set by fellow Americans Andre Morris, Dameon Johnson, Deon Minor and Milton Campbell
They were rewarded with a $25,000 check from the meeting's sponsors.
Clement broke Michael Johnson's indoor 400 metres world record on the same track last year, while Spearmon set an indoor 300 metres world best of 31.88 second on Friday.
Wariner won the Olympic 400 metres in 2004 and ran with Williamson in the Americans' gold-medal winning 4x400 metres relay team.