2003 ATP season
ATPWTA
The 2003 ATP season: 2,845 matches. Grand Slam champions: Agassi A., Ferrero J.C., Federer R., Roddick A.; most titles: Federer R. (7).
Hard 1,385 · Clay 987 · Grass 304 · Carpet 169 matches
Grand Slams, Tour Finals and 1000s
| 26 Jan 2003 | Australian Open Grand Slam | Agassi A. |
| 16 Mar 2003 | Pacific Life Open 1000 | Hewitt L. |
| 30 Mar 2003 | NASDAQ-100 Open 1000 | Agassi A. |
| 20 Apr 2003 | Monte Carlo Masters 1000 | Ferrero J.C. |
| 11 May 2003 | Telecom Italia Masters Roma 1000 | Mantilla F. |
| 18 May 2003 | Hamburg TMS 1000 | Coria G. |
| 8 Jun 2003 | French Open Grand Slam | Ferrero J.C. |
| 6 Jul 2003 | Wimbledon Grand Slam | Federer R. |
| 10 Aug 2003 | Montreal TMS 1000 | Roddick A. |
| 17 Aug 2003 | Western & Southern Financial Group Masters 1000 | Roddick A. |
| 7 Sept 2003 | US Open Grand Slam | Roddick A. |
| 19 Oct 2003 | Madrid Masters 1000 | Ferrero J.C. |
| 2 Nov 2003 | BNP Paribas 1000 | Henman T. |
| 17 Nov 2003 | Masters Cup Tour Finals | Federer R. |
Most titles
Longest winning runs
Biggest upsets by the odds
| 14 Jan 2003 | Sirianni J. (252) | Mirnyi M. (49) | 9.00 | Australian Open Grand Slam1st Round |
| 23 Jun 2003 | Karlovic I. (203) | Hewitt L. (2) | 9.00 | Wimbledon Grand Slam1st Round |
| 22 Mar 2003 | Clavet F. (178) | Hewitt L. (1) | 8.00 | NASDAQ-100 Open 10002nd Round |
| 5 Aug 2003 | Larose S. (314) | Kuerten G. (14) | 8.00 | Montreal TMS 10001st Round |
| 29 Sept 2003 | Andreev I. (114) | Schalken S. (13) | 8.00 | Kremlin Cup 2501st Round |
| 26 May 2003 | Horna L. (88) | Federer R. (5) | 7.00 | French Open Grand Slam1st Round |
| 8 Jul 2003 | Vemic D. (319) | Fish M. (40) | 7.00 | Hall of Fame Championships 2501st Round |
| 20 Feb 2003 | Labadze I. (118) | Blake J. (23) | 6.50 | Kroger St. Jude 5002nd Round |
| 5 May 2003 | Ferrer D. (60) | Agassi A. (1) | 6.50 | Telecom Italia Masters Roma 10001st Round |
| 15 Jul 2003 | Lisnard J.R. (96) | Gaudio G. (30) | 6.50 | Priority Telecom Dutch Open 2501st Round |
Biggest upsets by ranking
| 5 Aug 2003 | Nestor D. (885) | Ginepri R. (44) | 841 | Montreal TMS 10001st Round |
| 5 Aug 2003 | Black W. (538) | Ferreira W. (20) | 518 | Montreal TMS 10001st Round |
| 9 Jul 2003 | Guccione C. (655) | Pescosolido S. (143) | 512 | Hall of Fame Championships 2501st Round |
| 21 Jul 2003 | Delic A. (582) | Mello R. (111) | 471 | RCA Championships 2501st Round |
| 23 Jun 2003 | Childs L. (489) | Davydenko N. (35) | 454 | Wimbledon Grand Slam1st Round |
| 21 Jul 2003 | Guccione C. (528) | Mamiit C. (145) | 383 | RCA Championships 2501st Round |
| 1 Oct 2003 | Black W. (395) | Safin M. (27) | 368 | Kremlin Cup 2501st Round |
| 21 Jul 2003 | Mergea F. (615) | Vik R. (250) | 365 | Generali Open 5001st Round |
| 30 Jul 2003 | Amritraj P. (351) | Safin M. (21) | 330 | Mercedes-Benz Cup 2501st Round |
| 9 Sept 2003 | Moldovan I. (393) | Behrend T. (79) | 314 | Open Romania 2501st Round |
Every final (67)
| 4 Jan 2003 | Qatar Exxon Mobil Open 250 | Koubek S. |
| 5 Jan 2003 | AAPT Championships 250 | Davydenko N. |
| 5 Jan 2003 | TATA Open 250 | Srichaphan P. |
| 11 Jan 2003 | adidas International 250 | Lee H.T. |
| 12 Jan 2003 | Heineken Open 250 | Kuerten G. |
| 26 Jan 2003 | Australian Open Grand Slam | Agassi A. |
| 2 Feb 2003 | Breil ATP 250 | Verkerk M. |
| 16 Feb 2003 | Open 13 250 | Federer R. |
| 17 Feb 2003 | Bellsouth Open 250 | Rios M. |
| 17 Feb 2003 | Siebel Open 250 | Agassi A. |
| 23 Feb 2003 | ABN AMRO World Tennis Tournament 500 | Mirnyi M. |
| 23 Feb 2003 | Copa AT&T 250 | Moya C. |
| 23 Feb 2003 | Kroger St. Jude 500 | Dent T. |
| 1 Mar 2003 | Copenhagen Open 250 | Kucera K. |
| 1 Mar 2003 | Dubai Championships 500 | Federer R. |
| 2 Mar 2003 | Abierto Mexicano 500 | Calleri A. |
| 9 Mar 2003 | Franklin Templeton Tennis Classic 250 | Hewitt L. |
| 9 Mar 2003 | International Championships 250 | Gambill J.M. |
| 16 Mar 2003 | Pacific Life Open 1000 | Hewitt L. |
| 30 Mar 2003 | NASDAQ-100 Open 1000 | Agassi A. |
| 13 Apr 2003 | Estoril Open 250 | Davydenko N. |
| 13 Apr 2003 | Grand Prix Hassan II 250 | Boutter J. |
| 20 Apr 2003 | Monte Carlo Masters 1000 | Ferrero J.C. |
| 27 Apr 2003 | Open Seat Godo 500 | Moya C. |
| 27 Apr 2003 | U.S. Men's Clay Court Championships 250 | Agassi A. |
| 4 May 2003 | BMW Open 250 | Federer R. |
| 4 May 2003 | CAM Open Comunidad Valenciana 250 | Ferrero J.C. |
| 11 May 2003 | Telecom Italia Masters Roma 1000 | Mantilla F. |
| 18 May 2003 | Hamburg TMS 1000 | Coria G. |
| 24 May 2003 | Internationaler Raiffeisen Grand Prix 250 | Roddick A. |
| 8 Jun 2003 | French Open Grand Slam | Ferrero J.C. |
| 15 Jun 2003 | Gerry Weber Open 250 | Federer R. |
| 15 Jun 2003 | Stella Artois 250 | Roddick A. |
| 21 Jun 2003 | Nottingham Open 250 | Rusedski G. |
| 22 Jun 2003 | Ordina Open 250 | Schalken S. |
| 6 Jul 2003 | Wimbledon Grand Slam | Federer R. |
| 13 Jul 2003 | Allianz Suisse Open 250 | Novak J. |
| 13 Jul 2003 | Hall of Fame Championships 250 | Ginepri R. |
| 13 Jul 2003 | Swedish Open 250 | Zabaleta M. |
| 20 Jul 2003 | Mercedes Cup 500 | Coria G. |
| 20 Jul 2003 | Priority Telecom Dutch Open 250 | Massu N. |
| 27 Jul 2003 | Croatia Open 250 | Moya C. |
| 27 Jul 2003 | Generali Open 500 | Coria G. |
| 27 Jul 2003 | RCA Championships 250 | Roddick A. |
| 3 Aug 2003 | Idea Prokom Open 250 | Coria G. |
| 3 Aug 2003 | Legg Mason Classic 500 | Henman T. |
| 3 Aug 2003 | Mercedes-Benz Cup 250 | Ferreira W. |
| 10 Aug 2003 | Montreal TMS 1000 | Roddick A. |
| 17 Aug 2003 | Western & Southern Financial Group Masters 1000 | Roddick A. |
| 24 Aug 2003 | TD Waterhouse Cup 250 | Srichaphan P. |
| 7 Sept 2003 | US Open Grand Slam | Roddick A. |
| 14 Sept 2003 | Brasil Open 250 | Schalken S. |
| 14 Sept 2003 | Open Romania 250 | Sanchez D. |
| 28 Sept 2003 | Campionati Internazionali Di Sicilia 250 | Massu N. |
| 28 Sept 2003 | Heineken Open 250 | Philippoussis M. |
| 28 Sept 2003 | Thailand Open 250 | Dent T. |
| 5 Oct 2003 | Japan Open 500 | Schuettler R. |
| 5 Oct 2003 | Kremlin Cup 250 | Dent T. |
| 5 Oct 2003 | Open de Moselle 250 | Clement A. |
| 12 Oct 2003 | Grand Prix de Lyon 250 | Schuettler R. |
| 19 Oct 2003 | Madrid Masters 1000 | Ferrero J.C. |
| 26 Oct 2003 | St. Petersburg Open 250 | Kuerten G. |
| 26 Oct 2003 | Stockholm Open 250 | Fish M. |
| 26 Oct 2003 | Swiss Indoors 250 | Coria G. |
| 2 Nov 2003 | BNP Paribas 1000 | Henman T. |
| 12 Nov 2003 | CA Tennis Trophy 500 | Federer R. |
| 17 Nov 2003 | Masters Cup Tour Finals | Federer R. |
Rankings (in brackets) are as at the match. Odds are the winner's pre-match average market price (Bet365 or Pinnacle before 2010). Winning runs ignore walkovers. Tour-level main draws. Data: tennis-data.co.uk.