http://en.wikipedia.org/wiki/Billy_Collins_(boxer)

In 2007, Resto made a tearful apology to Collins-Nile for his role in the scheme. He also admitted that his hand wraps had been soaked in plaster of Paris before the fight. This caused them to harden into plaster casts like those used to set broken bones. The hand wraps were never confiscated and did not figure into the official investigation of the tampering incident. However, the net result was that between the plaster casts and unpadded gloves, Resto was striking Collins with rocks.[3] At a 2008 press conference, Resto not only admitted to knowing that Lewis had tampered with the gloves, but had done so at least twice before.[4] The 1983 incident and subsequent aftermath is covered in the HBO-aired documentary Assault in the Ring.[5]