WBC, IBF, WBA middleweight champion Claressa Shields is not interested in hearing any excuses in the aftermath of her planned unification with career rival Savannah Marshall, who holds the WBO strap.

This past Saturday night, Shields crushed Femke Hermans in the third round in Newcastle, with a dramatic one-punch KO that sent Hermans down and out.

After the fight, Shields and Marshall went face to face to exchange harsh words. 

The two are expected to collide on a date in the summer.

Marshall defeated Shields in the amateurs. Shields would go on to win two Olympics gold medals. To date, that's still the only defeat that Shields ever suffered in a boxing ring.

The British banger is promising to knock Shields out - something that Shields confidently vows will never happen.

"I just told her to make sure she brings that punching power with her in the summer because I don't want any excuses when I beat her," Shields said on Sky Sports News on Monday.

"I don't have any concerns. I am the greatest, the GWOAT - greatest woman of all time. I think it's gonna be a great fight between her and myself. It's one of the biggest grudge matches in women's boxing and I'm happy that I get to be a part of it in front of the fans here in the UK, in front of her family, in front of her friends, in front of the fans."

"I want her to hit me with that same punch. When it comes to fighting somebody like an OG as in myself, you've got to bring more than punching power to the show. That's all I'm saying. Knockouts do sell, so it's something that I want to add to my resumé and Savannah Marshall is going to be the first victim who I knock out."