After retiring, he and Saddler involved in a series of exhibition bouts, and in 1980, Pep sued Sports Illustrated for running a story suggesting that he threw his fight with Perez. Pep won the lawsuit, and Sports Illustrated had to pay him a large amount of money because the article was detrimental to Pep's personality and not based on proven facts.
http://en.wikipedia.org/wiki/Willie_Pep

Not exactly a relaible source I know!