The term 'FORMER CANADIAN BASEBALL PLAYER' can be summarized by the crossword solution EXPO, which is a four-letter word. EXPO is an abbreviation for the Montreal Expos, a former Major League Baseball team based in Montreal, Quebec, Canada. The team was active from 1969 to 2004 and was the first MLB franchise located outside of the United States. Many former Canadian baseball players played for the Expos during their time in the league.