A referee technical decision (RTD) is a term used in boxing when a fight ends because a fighter refuses to continue or a fighter's corner refuses to allow the fighter to continue.
One of the most famous referee technical decisions occurred in the Sonny Liston vs. Muhammad Ali fight on February 25, 1964, in Miami Beach, Florida, the first of their two fights. After six back and forth rounds, Sonny Liston, complaining of a shoulder injury, refused to get up from his stool for the seventh round. The fight went to Muhammad Ali who, as a result, became the World Heavyweight Champion.
Another example is the match between Pacquiao and Dela Hoya on December 6, 2008 wherein the latter's cornerman told him to stop the match at the end of round 8 since Pacquiao was too fast for him.