Claressa Shields became a two-division world champion, and Christina Hammer retained her two world title belts as both scored unanimous decision victories on Friday night on SHOWTIME BOXING: SPECIAL EDITION from the Masonic Temple in Detroit, MIch.

And now they have their sights set on one another.

The two-time Olympic Gold Medalist Shields of nearby Flint, Mich., was knocked down for the first time in her career 53 seconds into the first round, but she was able to come back and win every round after that to become a two-division world champion capturing the vacant IBF and WBA Middleweight World Championships against Hanna Gabriels. The judges’ scored the fight 98-91, 97-92 twice.

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Hammer entered the ring after the Shields fight, and an emotional Shields pressed toward Hammer and some pushing and shoving ensued.

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“I’m just tired of Hammer disrespecting me all the time,” Shields (6-0, 2 KOs) said. “She comes into the ring after all my rights, talks trash, and then she goes in there and looks like [crap] against Nelson. I’m sick of it. But I let her know I’m more than ready for a fight against her. She wanted me to lose tonight, but I wanted her to win because I want to fight her. We have to unify now.”

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Shields and Gabriels started the fight swinging furiously, but it was Gabriels (18-2-1, 11 KOs) who connected on a right uppercut sending Shields to the canvas.

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“Once I went down, I took a deep breath and I remember thinking to myself, ‘I’m about to whip this girl’ ” Shields said. “I just remember thinking let’s use the jab and be smart.”

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Costa Rica’s Gabriels, a unified 154-pound titleholder, was coming up in weight and attempting to become a three-division world champion.

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“I trained to go the distance but my heart betrayed me, because after that first knock down, I was looking for another one,” said Gabriels, the reigning WBA and WBO champion who was fighting in her 12th straight world title fight since winning the welterweight title in 2009. “I wanted to show everyone I had a warrior’s heart.

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“I didn’t feel I had an advantage after the knockdown. I felt I had to work round after round to even have a possibility to win.”

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Added Gabriels: “She has a lot of power. It was a great fight and you have to accept the judges’ decision. She’s powerful and for the fans I think it went well.

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Shields suffered a cut on the left cheek in round 10, and also overcame a head butt. She recalled being hurt by Gabriels’ punches to the head just three times in the fight. “The first round, fourth round and the eighth round, other than that she didn’t hit me with no head shots.”

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Shields – in her first fight with new trainer John David Jackson – said she learned something about herself after the fight. “I can get put on my ass, get up and come back and win,” she said. “Tonight was my night and I have to show the world I’m the greatest of all-time. I showed who I am. Now, I’m really dangerous because you can even put me down, and I’ll still come back to win.”

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The difference in the fight was Shields' accuracy, especially in terms of her power shots as she connected on 42 percent compared to Gabriels’ 26 percent.

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Shields was asked after the fight when she would like to face Hammer. “Hopefully it’s next,” she said. “I don’t need no rest. I could have whipped her tonight. I’m just so sick of her and her whole team.”

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