Two-time defending champion Andre Agassi defeated Carlos Moyá in the final, 6–3, 6–3 to win the men's singles tennis title at the 2003 Miami Open.
Seeds All thirty-two seeds received a bye to the second round.
Draw
Finals
Top half
Section 1
Section 2
Section 3
Section 4
Bottom half
Section 5
Section 6
Section 7
Section 8
Qualifying
Qualifying seeds
Qualifiers
Lucky loser Flávio Saretta
Qualifying draw
First qualifier
Second qualifier
Third qualifier
Fourth qualifier
Fifth qualifier
Sixth qualifier
Seventh qualifier
Eighth qualifier
Ninth qualifier
Tenth qualifier
Eleventh qualifier
Twelfth qualifier
References
External links Main draw Main draw (ATP) Qualifying draw (ATP) ITF tournament profile