2001 tennis event results
Franco Squillari  was the defending champion but lost in the third round to Guillermo Cañas .
Gustavo Kuerten  won in the final 6–3, 6–2, 6–4 against Cañas.
 
A champion seed is indicated in bold text while text in italics indicates the round in which that seed was eliminated. All sixteen seeds  received a bye  to the second round.
Key 
 
Grand Slam events Tennis Masters Series ATP International Series Gold 
Memphis  (S , D ) 
Rotterdam  (S , D ) 
Acapulco  (S , D ) 
Dubai  (S , D ) 
Barcelona  (S , D ) 
Stuttgart Outdoor  (S , D ) 
Kitzbühel  (S , D ) 
Indianapolis  (S , D ) 
Tokyo  (S , D ) 
Vienna  (S , D ) 
 ATP International Series 
Adelaide  (S , D ) 
Chennai  (S , D ) 
Doha  (S , D ) 
Auckland  (S , D ) 
Sydney  (S , D ) 
Bogotá  (S , D ) 
Milan  (S , D ) 
Copenhagen  (S , D ) 
Marseille  (S , D ) 
Viña del Mar  (S , D ) 
Buenos Aires  (S , D ) 
San Jose  (S , D ) 
Delray Beach  (S , D ) 
Scottsdale  (S , D ) 
Casablanca  (S , D ) 
Estoril  (S , D ) 
Atlanta  (S , D ) 
Houston  (S , D ) 
Majorca  (S , D ) 
Munich  (S , D ) 
St. Pölten  (S , D ) 
Halle  (S , D ) 
Queen's/London  (S , D ) 
Nottingham  (S , D ) 
's-Hertogenbosch  (S , D ) 
Båstad  (S , D ) 
Gstaad  (S , D ) 
Newport  (S , D ) 
Amsterdam  (S , D ) 
Umag  (S , D ) 
Los Angeles  (S , D ) 
Sopot  (S , D ) 
Long Island  (S , D ) 
Bucharest  (S , D ) 
Salvador  (S , D ) 
Tashkent  (S , D ) 
Shanghai  (S , D ) 
Hong Kong  (S , D ) 
Palermo  (S , D ) 
Moscow  (S , D ) 
Lyon  (S , D ) 
Basel  (S , D ) 
St. Petersburg  (S , D ) 
Stockholm  (S , D ) 
 Team events