MILWAUKEE — A former college classmate sued Ryan Braun, saying the Brewers slugger sought his help in fighting a failed drug test, balked on paying him and then disparaged him when asked why their friendship soured.

Ralph Sasson, a Milwaukee law student, said Braun’s agent hired him in 2011 to do legal research aimed at clearing Braun after the left fielder tested positive for steroid use. The agent later asked him to investigate the man who collected Braun’s urine.