Two-time Olympic gold medalist Claressa Shields remained undefeated with a unanimous decision over Christina Hammer in a middleweight championship bout and one of the most anticipated fights in women's boxing history. (photos by Stephanie Trapp).

Shields (9-0) held three versions of the 160-pound title and snagged Hammer's slice of the division championship to unify the championships Saturday night at Boardwalk Hall. The charismatic Shields had a few thousand fans on their feet — and A-listers rooting her on from home — to give herself plenty of gold to strap around her waist to go with the medals around her neck.

Shields Hammer Fight

Undefeated and undisputed, Shield won 98-91 on two cards and 98-92 on the other, and was simply dominant over 10 two-minute rounds.

Hammer's mouthpiece went flying in the eighth round when she absorbed more blows to the face that left her reeling and with about no chance for a comeback.

Shields, out of Flint, Michigan, nailed Hammer with a flurry of shots to close the eighth round and had the fans howling for "T-Rex!"

Shields Hammer Fight

Shields won Olympic gold in 2012 at London and 2016 in Rio, and hasn't lost since 2012 as an amateur. Shields has made it a mission to revolutionize women's boxing the way Ronda Rousey became a mainstream star in mixed martial arts. There have been more accomplished female fighters — Laila Ali, Christy Martin, Lucia Rijker top the short list — but no bout has quite matched this one in anticipation or potential historic significance.

Shields Hammer Fight

Shields Hammer Fight

Shields Hammer Fight

Shields Hammer Fight

Shields Hammer Fight

Shields Hammer Fight

Shields Hammer Fight

Shields Hammer Fight

Shields Hammer Fight

Shields Hammer Fight

Shields Hammer Fight

Shields Hammer Fight

Shields Hammer Fight

Shields Hammer Fight

Shields Hammer Fight

Shields Hammer Fight

Claressa Shields

Claressa Shields

Claressa Shields

Claressa Shields

Claressa Shields