| Player Info |
| Kuerten won his 19th career title in St. Petersburg, Russia. It was his second title of the year, but his first since the second week of the season in Auckland. He became the first non-American to reach the final of all four North American hard court Tennis Masters Series tournaments (Indian Wells, Miami, Cincinnati and Montreal or Toronto) in Indian Wells, California. He won his last Tennis Masters Series title in 2001 in Cincinnati, where he played two matches on the final day there, as he did in Indian Wells, this year. |
| 2003 Results | |||
| Heineken Open | |||
| Rd | Opponent | W/L | Score |
| 1 | Martin Verkerk | W | 7-6 (7-5), 6-4 |
| 2 | Michael Russell | W | 4-6, 6-4, 6-2 |
| QF | Guillermo Coria | W | 7-5, 4-6, 6-2 |
| SF | Mariano Zabaleta | W | 6-3, 6-3 |
| F | Dominik Hrbaty | W | 6-3, 7-5 |
| Australian Open | |||
| Rd | Opponent | W/L | Score |
| 1 | Hicham Arazi | W | 6-4, 7-6 (10-8), 6-3 |
| 2 | Radek Stepanek | L | 7-5, 3-6, 5-7, 6-4, 3-6 |
| Davis Cup | |||
| Rd | Opponent | W/L | Score |
| 1 | Jonas Bjorkman | L | 4-6, 4-6, 6-4, 6-4, 1-6 |
| 1 | Andreas Vinciguerra | W | 6-1, 6-4, 6-4 |
| Copa AT&T | |||
| Rd | Opponent | W/L | Score |
| 1 | Ivan Miranda | W | 6-2, 6-4 |
| 2 | Flavio Saretta | W | 6-4, 6-7 (5-7), 7-5 |
| QF | Felix Mantilla | W | 6-2, 6-7 (5-7), 6-1 |
| SF | Carlos Moya | L | 6-7 (6-8), 1-6 |
| Mexican Open | |||
| Rd | Opponent | W/L | Score |
| 1 | Nicolas Coutelot | W | 6-7 (2-7), 7-6 (12-10), 6-2 |
| 2 | David Ferrer | W | 5-7, 6-1, 6-2 |
| QF | Fernando Gonzalez | W | 6-4, retired (right arm) |
| SF | Mariano Zabaleta | L | 6-7 (4-7), 5-7 |
| Pacific Life Open | |||
| Rd | Opponent | W/L | Score |
| 1 | Goran Ivanisevic | W | 6-2, 6-4 |
| 2 | Roger Federer | W | 7-5, 7-6 (7-3) |
| 3 | Agustin Calleri | W | 6-4, 7-6 (7-5) |
| QF | James Blake | W | 4-6, 6-4, 6-0 |
| SF | Rainer Schuettler | W | 6-2, 3-6, 6-2 |
| F | Lleyton Hewitt | L | 1-6, 1-6 |
| NASDAQ-100 Open | |||
| Rd | Opponent | W/L | Score |
| 2 | Thomas Enqvist | L | 3-6, 4-6 |
| Tennis Masters Monte Carlo | |||
| Rd | Opponent | W/L | Score |
| 1 | Mardy Fish | W | 3-6, 6-1, 6-0 |
| 2 | Magnus Norman | L | 6-1, 5-7, 2-6 |
| Open Seat Godo | |||
| Rd | Opponent | W/L | Score |
| 2 | Felix Mantilla | W | 7-6 (7-1), 6-3 |
| 3 | Younes El Aynaoui | W | walkover (fever) |
| QF | Juan Carlos Ferrero | L | 4-6, 4-6 |
| Italia Masters | |||
| Rd | Opponent | W/L | Score |
| 1 | Gaston Gaudio | L | 3-6, 6-2, 4-6 |
| Tennis Masters Hamburg | |||
| Rd | Opponent | W/L | Score |
| 1 | Juan Ignacio Chela | W | 6-2, 6-4 |
| 2 | Nikolay Davydenko | W | 7-5, 6-0 |
| 3 | Wayne Ferreira | L | 6-7 (4-7), 4-6 |
| French Open | |||
| Rd | Opponent | W/L | Score |
| 1 | Marc Rosset | W | 6-2, 6-7 (3-7), 6-3, 7-6 (7-3) |
| 2 | Hicham Arazi | W | 6-1, 6-0, 6-1 |
| 3 | Gaston Gaudio | W | 7-6 (7-1), 7-5, 5-7, 6-3 |
| 4 | Tommy Robredo | L | 4-6, 6-1, 6-7 (2-7), 4-6 |
| The Wimbledon Championships | |||
| Rd | Opponent | W/L | Score |
| 1 | John van Lottum | W | 2-6, 3-2, retired |
| 2 | Todd Martin | L | 6-7 (4-7), 4-6, 4-6 |
| Mercedes-Benz Cup | |||
| Rd | Opponent | W/L | Score |
| 1 | Frederic Niemeyer | W | 2-6, 7-6 (7-2), 6-4 |
| 2 | Eric Taino | W | 6-3, 7-6 (7-5) |
| QF | Mark Philippoussis | L | 3-6, 6-3, 6-7 (5-7) |
| Tennis Masters Canada | |||
| Rd | Opponent | W/L | Score |
| 1 | Simon Larose | L | 5-7, 6-7 (2-7) |
| Western & Southern Financial Group Masters | |||
| Rd | Opponent | W/L | Score |
| 1 | Mariano Zabaleta | L | 4-6, 0-6 |
| TD Waterhouse Cup | |||
| Rd | Opponent | W/L | Score |
| 1 | Dominik Hrbaty | W | 6-4, 7-6 (7-3) |
| 2 | Karol Beck | W | 7-5, 6-3 |
| QF | Younes El Aynaoui | L | 6-7 (4-7), 4-6 |
| U.S. Open | |||
| Rd | Opponent | W/L | Score |
| 1 | Dmitry Tursunov | L | 7-5, 2-6, 2-6, 6-4, 6-7 (1-7) |
| Brasil Open | |||
| Rd | Opponent | W/L | Score |
| 1 | Magnus Norman | W | 6-3, 6-2 |
| 2 | Werner Eschauer | W | 6-2, 6-1 |
| QF | Ricardo Mello | W | 6-2, 6-2 |
| SF | Rainer Schuettler | L | 4-6, 6-2, 5-7 |
| Tennis Masters Madrid | |||
| Rd | Opponent | W/L | Score |
| 2 | Nicolas Massu | L | 3-6, 5-7 |
| St. Petersburg Open | |||
| Rd | Opponent | W/L | Score |
| 1 | Brian Vahaly | W | 7-6 (7-5), 6-4 |
| 2 | Victor Hanescu | W | 7-6 (7-1), 7-6 (7-1) |
| QF | Vincent Spadea | W | 6-4, 7-6 (7-4) |
| SF | Alex Corretja | W | 6-4, 6-3 |
| F | Sargis Sargsian | W | 6-4, 6-3 |
| BNP Paribas Masters | |||
| Rd | Opponent | W/L | Score |
| 1 | Mardy Fish | W | 6-4, 7-6 (7-2) |
| 2 | Mark Philippoussis | W | 6-7 (5-7), 7-6 (13-11), 7-6 (7-1) |
| 3 | Tim Henman | L | 4-6, 2-6 |