Behind a relentless early offensive assault led by an active jab, Mikaela Mayer held off a late charge by rival Sandy Ryan to win a unanimous decision and retain the women's WBO welterweight title Saturday night,

The sequel was every bit as good as the first fight between Mikaela Mayer and Sandy Ryan. The result was more decisive this time around, though, as Mayer won by unanimous decision to make the first defense of her WBO welterweight title.

Mikaela Mayer beat Sandy Ryan in a much-anticipated rematch Saturday night in Las Vegas to defend her WBO women's welterweight champion.