He is well known for his "El Presidente, El Perfecto!" call when Expos pitcher Dennis Martínez threw his perfect game against the Los Angeles Dodgers on July 28, 1991.
During Martinez' time with the Expos, a variation of the Montreal hot dog topped with cheese and bacon called the Denny Dog was sold at Olympic Stadium.
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The fight took place in the Dennis Martinez stadium, Managua, Nicaragua and was part of an evening in posthumous tribute to triple world champion Alexis Arguello, El Flaco Explosivo, considered as one of the greatest boxers of all time.