By Dan Ambrose: Devin Haney wants to start negotiating a fight against Gervonta ‘Tank’ Davis as soon as he gets done with his next contest against Leo Santa Cruz on October 24. WBC lightweight champion Haney (24-0, 15 KOs) believes that a match between him and WBA ‘regular’ 135-pound champion Tank Davis (23-0, 22 KOs) […]