Wexler played for Argentina in three Chess Olympiads: in 1956, at second reserve board in the 12th Chess Olympiad in Moscow (+1 –3 =0); in 1960, at third board in the 14th Chess Olympiad in Leipzig (+4 –5 =6); in 1964, at fourth board in the 16th Chess Olympiad in Tel Aviv (+6 –2 =5).