Cincinnati Open 2003
Andy Roddick won the title, beating Mardy Fish 4–6 7–6(3) 7–6(4) in the final.
Main draw 64 players
- 2🇪🇸Juan Carlos FerreroRound of 32 · Lost to Gaston Gaudio
- 3🇨🇭Roger FedererRound of 32 · Lost to David Nalbandian
- 4🇪🇸Carlos MoyaRound of 64 · Lost to Fabrice Santoro
- 5🇦🇺Lleyton HewittRound of 64 · Lost to Xavier Malisse
- 6🇦🇷Guillermo CoriaQuarterfinals · Lost to Max Mirnyi
- 7🇺🇸Andy RoddickFinal · Champion
- 8🇩🇪Rainer SchuettlerSemifinals · Lost to Mardy Fish
- 9🇹🇭Paradorn SrichaphanRound of 64 · Lost to Feliciano Lopez
- 10🇫🇷Sebastien GrosjeanRound of 64 · Lost to Wesley Moodie
- 11🇳🇱Sjeng SchalkenRound of 32 · Lost to James Blake
- 12🇨🇿Jiri NovakRound of 64 · Lost to Greg Rusedski
- 13🇨🇱Fernando GonzalezRound of 32 · Lost to Juan Ignacio Chela
- 14🇧🇷Gustavo KuertenRound of 64 · Lost to Mariano Zabaleta
- 15🇪🇸Tommy RobredoRound of 64 · Lost to Paul Henri Mathieu
- 16🇳🇱Martin VerkerkRound of 64 · Lost to Noam Okun
- 17🇪🇸Felix MantillaRound of 64 · Lost to Thomas Enqvist
- 🇺🇸Mardy FishFinal · Lost to Andy Roddick
- 🇧🇾Max MirnyiSemifinals · Lost to Andy Roddick
- 🇦🇷David NalbandianQuarterfinals · Lost to Mardy Fish
- 🇦🇷Mariano ZabaletaQuarterfinals · Lost to Andy Roddick
- 🇺🇸Robby GinepriQuarterfinals · Lost to Rainer Schuettler
- 🇫🇷Arnaud ClementRound of 16 · Lost to Mardy Fish
- 🇧🇷Flavio SarettaRound of 16 · Lost to Mariano Zabaleta
- 🇦🇷Gaston GaudioRound of 16 · Lost to Robby Ginepri
- Q🇲🇦Hicham AraziRound of 16 · Lost to Max Mirnyi
- 🇺🇸James BlakeRound of 16 · Lost to Andy Roddick
- 🇦🇷Juan Ignacio ChelaRound of 16 · Lost to David Nalbandian
- 🇷🇺Mikhail YouzhnyRound of 16 · Lost to Guillermo Coria
- WC🇺🇸Todd MartinRound of 16 · Lost to Rainer Schuettler
- 🇫🇷Fabrice SantoroRound of 32 · Lost to Flavio Saretta
- 🇪🇸Feliciano LopezRound of 32 · Lost to Todd Martin
- 🇬🇧Greg RusedskiRound of 32 · Lost to Arnaud Clement
- 🇭🇷Ivan LjubicicRound of 32 · Lost to Andy Roddick
- 🇫🇮Jarkko NieminenRound of 32 · Lost to Rainer Schuettler
- Q🇮🇱Noam OkunRound of 32 · Lost to Robby Ginepri
- 🇫🇷Paul Henri MathieuRound of 32 · Lost to Hicham Arazi
- WC🇸🇪Thomas EnqvistRound of 32 · Lost to Max Mirnyi
- Q🇿🇦Wesley MoodieRound of 32 · Lost to Mikhail Youzhny
- 🇧🇪Xavier MalisseRound of 32 · Lost to Mardy Fish
- 🇷🇺Yevgeny KafelnikovRound of 32 · Lost to Guillermo Coria
- 🇲🇦Younes El AynaouiRound of 32 · Lost to Mariano Zabaleta
- 🇦🇷Agustin CalleriRound of 64 · Lost to Mikhail Youzhny
- 🇪🇸Albert CostaRound of 64 · Lost to Arnaud Clement
- 🇪🇸Alex CorretjaRound of 64 · Lost to Max Mirnyi
- WC🇺🇸Brian VahalyRound of 64 · Lost to Fernando Gonzalez
- 🇪🇸David SanchezRound of 64 · Lost to Flavio Saretta
- Q🇪🇸Fernando VerdascoRound of 64 · Lost to Andy Roddick
- 🇪🇸Fernando VicenteRound of 64 · Lost to Jarkko Nieminen
- 🇰🇷Hyung Taik LeeRound of 64 · Lost to Sjeng Schalken
- 🇺🇸Jan Michael GambillRound of 64 · Lost to Yevgeny Kafelnikov
- 🇦🇷Jose AcasusoRound of 64 · Lost to Todd Martin
- 🇸🇰Karol KuceraRound of 64 · Lost to Juan Ignacio Chela
- 🇦🇺Mark PhilippoussisRound of 64 · Lost to Mardy Fish
- WC🇺🇸Michael ChangRound of 64 · Lost to Hicham Arazi
- 🇪🇨Nicolas LapenttiRound of 64 · Lost to Ivan Ljubicic
- 🇷🇺Nikolay DavydenkoRound of 64 · Lost to Juan Carlos Ferrero
- 🇨🇿Radek StepanekRound of 64 · Lost to Robby Ginepri
- Q🇺🇸Robert KendrickRound of 64 · Lost to Gaston Gaudio
- Q🇦🇺Scott DraperRound of 64 · Lost to Roger Federer
- Q🇦🇹Stefan KoubekRound of 64 · Lost to Rainer Schuettler
- 🇬🇧Tim HenmanRound of 64 · Lost to Guillermo Coria
- 🇺🇸Vincent SpadeaRound of 64 · Lost to Younes El Aynaoui
- Q🇦🇺Wayne ArthursRound of 64 · Lost to David Nalbandian
- 🇿🇦Wayne FerreiraRound of 64 · Lost to James Blake