United States sets world record in 4x400m mixed relay at athletics worlds

Canada wins their 6th world aquatics championship with a bronze in the women's 4x100m medley relay

Tokyo: U.S. remains perfect in men's 4x100m medley relay

American men claim 4x100m relay gold at world championships

Italy shocks in photo finish in men's 4x100m relay

Tokyo: Australia snatches women's 4×100m medley relay gold

American men win 4x100 metres relay gold at track and field worlds