According to James' post match interview, James talked to the chair about enforcing the coaching rule. He never spoke to Calleri, just the chair. Calleri's camp was talking a lot, and James felt like the chair should enforce the rules. Calleri didn't like it, and started talking smack to James, who basically said, "Hey, I never said anything to you." When James held up new tennis balls in a service game, Calleri didn't acknowledge him, and you could here James say 'new balls?' over to Calleri. Calleri would still talk to him during changeovers and also at the end of the match, and James said something like 'hey, I'll talk to you anytime'. James tried talking to him as Calleri left the court, and Calleri just walked away, while being booed by the crowd.