Gregoire made his first-class debut for the Windwards during the 1968–69 Shell Shield season, playing against Trinidad and Tobago in January 1969.
[1] He played solely as a batsman on debut, with Bryan Mauricette taking the gloves.
[3] Although he never again represented the Windwards, Gregoire continued to play for the Dominican national team in regional competitions.
[4] He even captained his country for a period, although his appointment was controversial, as he was perceived to have a lesser social standing than his predecessors.
[5] Gregoire died in 1972, only a few years after the peak of his career, and his death was said to have "shocked [the] cricketing community".