"The Phantom Punch" fight. Muhammad Ali - Sonny Liston II on May 25, 1965 was barely seen as Ali knocked out Liston with a first round KO to the head. Be a legend! Every pair of Contenders boxer briefs features Contenders’ exclusive RIDE CONTROLTM – no ride-ups, total comfort, every time. Designed with care in California. Ultra-comfortable 88% polyester / 12% Spandex blend Jacquard waistband 7 1/4" inseam Tagless