Dominant Claressa Shields becomes first undisputed women’s heavyweight champion

• Shields unifies titles with unanimous-decision win
• Champion scores 10th-round knockdown in victory
• Claressa Shields v Danielle Perkins - as it happened

Claressa Shields unanimously outpointed Danielle Perkins on Sunday night in the first undisputed heavyweight bout in women's boxing to remain undefeated.

Shields, a two-time Olympic gold medalist with titles in five divisions, was in control of the fight from the start. She knocked down Perkins, landing a right hand on her chin with 15 seconds left in the 10th and final round.