Resendiz had the fight of his life in besting Plant on Saturday, and throwing a wrench in plans for a Jermall Charlo fight

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.

Caleb Plant and Jermall Charlo are one step away from securing a tantalizing showdown. But first, two hurdles must be cleared Saturday night. Plant must defeat Jose Resendiz in the main event,