Question: What is the nickname of the boxer who was offered to fight against Sergio Martinez in Atlantic City 2011?
Sentence (from "Sergio Martínez vs. Darren Barker"): Promoter Lou DiBella offered the fight with Martinez to titleholders Julio Cesar Chavez Jr. and Daniel Geale as well as junior middleweight titlist Miguel Cotto and Paul Williams, for a rubber match.
Relevant evidence: Yes