2003 AIG Japan Open Tennis Championships – Men's singles explained

Kenneth Carlsen was the defending champion but lost in the third round to Hyung-Taik Lee.

Rainer Schüttler won in the final 7–6^(7–5), 6–2 against Sébastien Grosjean.

Seeds

All sixteen seeds received a bye to the second round.

Draw

Top half

Section 2

Bottom half

Section 4

References