Anthony Joshua has been given a 24-hour deadline to sign a deal to fight Alexander Povetkin or face being stripped of the WBA portion of his world heavyweight boxing titles

Claressa Shields recovered from a first-round knockdown to unanimously outpoint Hanna Gabriels

Errol Spence Jr. retains IBF welterweight crown with a first-round knockout of Mexico's Carlos Ocampo in his first title defense in front of home crowd in Texas

Errol Spence Jr. set to defend IBF welterweight title at home in Texas against Mexico's Carlos Ocampo

Unbeaten heavyweight champions Deontay Wilder and Anthony Joshua appear poised for a title unification bout

Former heavyweight champion Vitali Klitschko honors brother Wladimir in induction speech at International Boxing Hall of Fame

Terence Crawford threw a bevy of punches toward the end of the ninth round to stop Jeff Horn and win the WBO welterweight title

Scott Dixon won his second consecutive IndyCar Series race to quickly break a tie for the third-most career wins in Indy-car history

Lightweight champions Mikey Garcia and Robert Easter Jr. will meet in a unification bout July 28 at Staples Center

Abner Mares is seeking redemption when he meets WBA featherweight champion Leo Santa Cruz in a rematch at Staples Center