Gary Mason has one loss against one opponent on his boxing record. For a list of Mason's best fights, refer to "Best fights of Gary Mason".
On March 6, 1991 Gary Mason faced off against Lennox Lewis in a heavyweight bout at age 28. He was coming in with a record of 35-1 (32), and Lewis was 25 years old and with a record of 14-0 (12). Mason lost the fight via 7th-round TKO.