The Cuban X-Giants were a professional Negro league baseball team that played from 1896 to 1906.
Grant and White left in 1900 and Bill Monroe joined at second base; both the Giants and X-Giants claimed to be the champions, a situation that was duplicated a year later.
In 1903 the club boasted Rube Foster on the mound and a middle infield of Charlie Grant and Home Run Johnson.
They played in the integrated Tri-State Independent League and then took 5 of 7 games from the Philadelphia Giants for the title as top black team in the east.
In late 1906, the Cuban X-Giants became a founding member of the National Association of Colored Baseball Clubs of the United States and Cuba.