Armando Resendiz likely derailed a prospective showdown between Caleb Plant and Jermall Charlo with a shocking victory over Plant Saturday night.

May has been a month of major upsets in boxing — and Armando Resendiz's shocking victory over Caleb Plant may be the biggest of them all.

After losing two of his past four fights, Caleb Plant wants to prove on Saturday that he’s still one of the best super middleweights in the world and that he can still compete for a world title. Armando Resendiz wants to prove that he also belongs in the 168-pound title picture.