Marcus Xavier McCauley, Jr. (born September 3, 1983 in Sacramento, California) is an American football cornerback for the Sacramento Mountain Lions of the United Football League. He was drafted by the Minnesota Vikings in the third round of the 2007 NFL Draft. He played college football at Fresno State. McCauley has also played for the Detroit Lions, Tampa Bay Buccaneers, New Orleans Saints, Washington Redskins and Indianapolis Colts.