Undefeated Brian Muller travelled into his opponent’s hometown of Ohio, USA; defeated Gary Coates, and moved back out without any commotion. The fight took place on April 5, 1980 at the Armory in Ohio and was the second in the USA for the Guyanese southpaw. The judges had the slick Muller, who went into the ring having never lost in eight fights, ahead on points at the end of the eight-round encounter. However, the undefeated trail ended in his next fight as Mark Harris gained revenge for an earlier loss.
On Boxing Day 1980, Harris won by split decision after 12 rounds. Muller had beaten the best that Guyana had to offer. He came out unscratched against the legendary Lennox Beckles, had back-to-back victories against Albert Browne and triumphed over vastly skilled Reggie Ford.
Muller would later turn his attention to North America where he reaped success. He engaged in 11 fights there, losing only twice. He made his last professional appearance in June 1986 and suffered a TKO in the seventh round, while challenging Frank Tate.
A contender for a spot on the list of Top Ten boxers from Guyana, Muller ended a seven year career with 20 victories, 3 defeats and one draw. He now resides in Las Vegas, Nevada.