1991 Monte Carlo Open – Singles

Andrei Chesnokov was the defending champion, but lost to Boris Becker in the quarterfinals. Sergi Bruguera defeated Boris Becker 5–7, 6–4, 7–6(8–6), 7–6(7–4) in the final.

1991 Monte Carlo Open – Singles

Andrei Chesnokov was the defending champion, but lost to Boris Becker in the quarterfinals. Sergi Bruguera defeated Boris Becker 5–7, 6–4, 7–6(8–6), 7–6(7–4) in the final.