Samuel Terrence McGuffie (born October 16, 1989) is an American bobsledder for the United States men's national team, a former American football running back and wide receiver and a former rugby union player. In American football, he most recently was a member of the Winnipeg Blue Bombers of the Canadian Football League. Previously in the National Football League, he had spent time with the Oakland Raiders in training camp in 2013, and then was briefly a practice squad player for the Arizona Cardinals and later the New England Patriots. He played his freshman season of college football at Michigan before transferring to Rice to play his final three seasons in his native state of Texas.