| Men's singles | |
|---|---|
| 2001 Heineken Trophy | |
| Champion |  Lleyton Hewitt |
| Runner-up |  Guillermo Cañas |
| Final score | 6–3, 6–4 |
| Draw | 32 (4 Q / 3 WC ) |
| Seeds | 8 |
Patrick Rafter was the defending champion but lost in the first round to Peter Wessels.
Lleyton Hewitt won in the final 6–3, 6–4 against Guillermo Cañas.
A champion seed is indicated in bold text while text in italics indicates the round in which that seed was eliminated.
Lleyton Hewitt (champion) Patrick Rafter (first round)
Arnaud Clément (first round)
Roger Federer (semifinals)
Dominik Hrbatý (first round)
Hicham Arazi (second round)
Sjeng Schalken (quarterfinals)
Vladimir Voltchkov (first round)| First round | Second round | Quarterfinals | Semifinals | Final | ||||||||||||||||||||||||||||||
| 1 | L Hewitt | 6 | 6 | |||||||||||||||||||||||||||||||
 D Sanguinetti | 2 | 1 | 1 | L Hewitt | 6 | 7 | ||||||||||||||||||||||||||||
| M Mirnyi | 65 | 63 | WC |  G Ivanišević | 4 | 5 | ||||||||||||||||||||||||||||
| WC | G Ivanišević | 77 | 77 | 1 | L Hewitt | 6 | 6 | |||||||||||||||||||||||||||
 M Gustafsson | 7 | 6 | Q |  G Elseneer | 2 | 4 | ||||||||||||||||||||||||||||
| WC | D van Scheppingen | 5 | 3 | M Gustafsson | 4 | 77 | 0 | |||||||||||||||||||||||||||
| Q | G Elseneer | 5 | 7 | 6 | Q | G Elseneer | 6 | 60 | 6 | |||||||||||||||||||||||||
| 8 | V Voltchkov | 7 | 5 | 0 | 1 | L Hewitt | 6 | 6 | ||||||||||||||||||||||||||
| 4 | R Federer | 77 | 6 | 4 | R Federer | 4 | 2 | |||||||||||||||||||||||||||
| A Dupuis | 63 | 4 | 4 | R Federer | 6 | 6 | ||||||||||||||||||||||||||||
 M Damm | 5 | 64 | WC | J van Lottum | 0 | 1 | ||||||||||||||||||||||||||||
| WC | J van Lottum | 7 | 77 | 4 | R Federer | 64 | 6 | 6 | ||||||||||||||||||||||||||
| R Sluiter | 6 | 6 | R Sluiter | 77 | 4 | 4 | ||||||||||||||||||||||||||||
| J Golmard | 0 | 4 | R Sluiter | 4 | ||||||||||||||||||||||||||||||
| N Escudé | 4 | 77 | 6 | N Escudé | 1r | |||||||||||||||||||||||||||||
| 5 | D Hrbatý | 6 | 63 | 3 | 1 | Lleyton Hewitt | 6 | 6 | ||||||||||||||||||||||||||
| 6 | H Arazi | 6 | 6 | Guillermo Cañas | 3 | 4 | ||||||||||||||||||||||||||||
| Q | D Petrovic | 3 | 2 | 6 | H Arazi | 3 | 3 | |||||||||||||||||||||||||||
| G Cañas | 6 | 6 | G Cañas | 6 | 6 | |||||||||||||||||||||||||||||
| Q |  K Capalik | 3 | 3 | G Cañas | 6 | 6 | ||||||||||||||||||||||||||||
| Q | Y Allegro | 69 | 6 | 6 | X Malisse | 3 | 4 | |||||||||||||||||||||||||||
| A Ilie | 711 | 1 | 1 | Q | Y Allegro | 5 | 4 | |||||||||||||||||||||||||||
| X Malisse | 6 | 6 | X Malisse | 7 | 6 | |||||||||||||||||||||||||||||
| 3 | A Clément | 4 | 4 | G Cañas | 7 | 6 | ||||||||||||||||||||||||||||
| 7 | S Schalken | 6 | 6 |  T Robredo | 5 | 4 | ||||||||||||||||||||||||||||
| J Siemerink | 3 | 4 | 7 | S Schalken | 78 | 6 | ||||||||||||||||||||||||||||
| T Zíb | 6 | 6 | T Zíb | 66 | 3 | |||||||||||||||||||||||||||||
| E Kempes | 4 | 1 | 7 | S Schalken | 3 | 4 | ||||||||||||||||||||||||||||
| T Robredo | 6 | 6 | T Robredo | 6 | 6 | |||||||||||||||||||||||||||||
| O Rochus | 4 | 1 | T Robredo | 77 | 6 | |||||||||||||||||||||||||||||
| P Wessels | 7 | 6 | P Wessels | 63 | 4 | |||||||||||||||||||||||||||||
| 2 | P Rafter | 5 | 4 | |||||||||||||||||||||||||||||||
Defending champion Gustavo Kuerten successfully defended his title, defeating Àlex Corretja in the final 6–7(3–7), 7–5, 6–2, 6–0 to win the men's singles tennis title at the 2001 French Open.
Lleyton Hewitt defeated Pete Sampras in the final, 7–6(7–4), 6–1, 6–1 to win the men's singles tennis title at the 2001 US Open. It was his first major title.
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