2003 Mercedes-Benz Cup – Singles

{{Tennis events|2003|Mercedes-Benz Cup|

| defchamp =

| champ = {{flagicon|RSA}} Wayne Ferreira

| runner = {{flagicon|AUS}} Lleyton Hewitt

| score = 6–3, 4–6, 7–5

| edition =

| type = singles doubles

| draw = 32 (4{{abbr| Q | Qualifiers}} / 3{{abbr| WC | Wild Cards}})

| seeds = 8

| main_name = Los Angeles Open (tennis) {{!}} Los Angeles Open

}}

Andre Agassi was the defending champion but did not compete that year.

Wayne Ferreira won in the final 6–3, 4–6, 7–5 against Lleyton Hewitt.

Seeds

{{colbegin}}

  1. {{flagicon|AUS}} Lleyton Hewitt (final)
  2. {{flagicon|FRA}} Sébastien Grosjean (quarterfinals)
  3. {{flagicon|NED}} Sjeng Schalken (second round)
  4. {{flagicon|BRA}} Gustavo Kuerten (quarterfinals)
  5. {{flagicon|AUS}} Mark Philippoussis (semifinals)
  6. {{flagicon|RUS}} Marat Safin (first round)
  7. {{flagicon|RSA}} Wayne Ferreira (champion)
  8. {{flagicon|USA}} Vince Spadea (quarterfinals)

{{colend}}

Draw

{{Draw key}}

=Finals=

{{4TeamBracket-Tennis3

| RD1=Semifinals

| RD2=Final

| team-width=175

| RD1-seed1=1

| RD1-team1={{flagicon|AUS}} Lleyton Hewitt

| RD1-score1-1=6

| RD1-score1-2=6

| RD1-score1-3= 

| RD1-seed2= 

| RD1-team2={{flagicon|GER}} Nicolas Kiefer

| RD1-score2-1=2

| RD1-score2-2=4

| RD1-score2-3= 

| RD1-seed3=5

| RD1-team3={{flagicon|AUS}} Mark Philippoussis

| RD1-score3-1=4

| RD1-score3-2=5

| RD1-score3-3= 

| RD1-seed4=7

| RD1-team4={{flagicon|RSA}} Wayne Ferreira

| RD1-score4-1=6

| RD1-score4-2=7

| RD1-score4-3= 

| RD2-seed1=1

| RD2-team1={{flagicon|AUS}} Lleyton Hewitt

| RD2-score1-1=3

| RD2-score1-2=6

| RD2-score1-3=5

| RD2-seed2=7

| RD2-team2={{flagicon|RSA}} Wayne Ferreira

| RD2-score2-1=6

| RD2-score2-2=4

| RD2-score2-3=7

}}

=Top half=

{{16TeamBracket-Compact-Tennis3-Byes

| RD1=First round

| RD2=Second round

| RD3=Quarterfinals

| RD4=Semifinals

| RD1-seed01=1

| RD1-team01={{flagicon|AUS}} L Hewitt

| RD1-score01-1=6

| RD1-score01-2=7

| RD1-score01-3= 

| RD1-seed02= 

| RD1-team02={{flagicon|USA}} C Mamiit

| RD1-score02-1=0

| RD1-score02-2=5

| RD1-score02-3= 

| RD1-seed03=WC

| RD1-team03={{flagicon|USA}} M Joyce

| RD1-score03-1=77

| RD1-score03-2=2

| RD1-score03-3=77

| RD1-seed04= 

| RD1-team04={{flagicon|USA}} J-M Gambill

| RD1-score04-1=65

| RD1-score04-2=6

| RD1-score04-3=64

| RD1-seed05= 

| RD1-team05={{flagicon|DEN}} K Carlsen

| RD1-score05-1=6

| RD1-score05-2=4

| RD1-score05-3=77

| RD1-seed06=WC

| RD1-team06={{flagicon|USA}} B Reynolds

| RD1-score06-1=2

| RD1-score06-2=6

| RD1-score06-3=63

| RD1-seed07=WC

| RD1-team07={{flagicon|IND}} P Amritraj

| RD1-score07-1=5

| RD1-score07-2= 

| RD1-score07-3= 

| RD1-seed08=6

| RD1-team08={{flagicon|RUS}} M Safin

| RD1-score08-1=3r

| RD1-score08-2=

| RD1-score08-3= 

| RD1-seed09=3

| RD1-team09={{flagicon|NED}} S Schalken

| RD1-score09-1=6

| RD1-score09-2=6

| RD1-score09-3= 

| RD1-seed10=Q

| RD1-team10={{flagicon|RUS}} D Golovanov

| RD1-score10-1=4

| RD1-score10-2=4

| RD1-score10-3= 

| RD1-seed11= 

| RD1-team11={{flagicon|GER}} N Kiefer

| RD1-score11-1=6

| RD1-score11-2=6

| RD1-score11-3= 

| RD1-seed12= 

| RD1-team12={{flagicon|FRA}} N Thomann

| RD1-score12-1=1

| RD1-score12-2=4

| RD1-score12-3= 

| RD1-seed13= 

| RD1-team13={{flagicon|CZE}} J Vacek

| RD1-score13-1=2

| RD1-score13-2=6

| RD1-score13-3=6

| RD1-seed14= 

| RD1-team14={{flagicon|USA}} K Kim

| RD1-score14-1=6

| RD1-score14-2=1

| RD1-score14-3=4

| RD1-seed15= 

| RD1-team15={{flagicon|USA}} J Gimelstob

| RD1-score15-1=4

| RD1-score15-2=3

| RD1-score15-3= 

| RD1-seed16=8

| RD1-team16={{flagicon|USA}} V Spadea

| RD1-score16-1=6

| RD1-score16-2=6

| RD1-score16-3= 

| RD2-seed01=1

| RD2-team01={{flagicon|AUS}} L Hewitt

| RD2-score01-1=6

| RD2-score01-2=6

| RD2-score01-3= 

| RD2-seed02=WC

| RD2-team02={{flagicon|USA}} M Joyce

| RD2-score02-1=3

| RD2-score02-2=0

| RD2-score02-3= 

| RD2-seed03= 

| RD2-team03={{flagicon|DEN}} K Carlsen

| RD2-score03-1=6

| RD2-score03-2=6

| RD2-score03-3= 

| RD2-seed04=WC

| RD2-team04={{flagicon|IND}} P Amritraj

| RD2-score04-1=4

| RD2-score04-2=2

| RD2-score04-3= 

| RD2-seed05=3

| RD2-team05={{flagicon|NED}} S Schalken

| RD2-score05-1=4

| RD2-score05-2=4

| RD2-score05-3= 

| RD2-seed06= 

| RD2-team06={{flagicon|GER}} N Kiefer

| RD2-score06-1=6

| RD2-score06-2=6

| RD2-score06-3= 

| RD2-seed07= 

| RD2-team07={{flagicon|CZE}} J Vacek

| RD2-score07-1=5

| RD2-score07-2=6

| RD2-score07-3=2

| RD2-seed08=8

| RD2-team08={{flagicon|USA}} V Spadea

| RD2-score08-1=7

| RD2-score08-2=2

| RD2-score08-3=6

| RD3-seed01=1

| RD3-team01={{flagicon|AUS}} L Hewitt

| RD3-score01-1=63

| RD3-score01-2=6

| RD3-score01-3=6

| RD3-seed02= 

| RD3-team02={{flagicon|DEN}} K Carlsen

| RD3-score02-1=77

| RD3-score02-2=4

| RD3-score02-3=3

| RD3-seed03= 

| RD3-team03={{flagicon|GER}} N Kiefer

| RD3-score03-1=1

| RD3-score03-2=7

| RD3-score03-3=6

| RD3-seed04=8

| RD3-team04={{flagicon|USA}} V Spadea

| RD3-score04-1=6

| RD3-score04-2=5

| RD3-score04-3=3

| RD4-seed01=1

| RD4-team01={{flagicon|AUS}} L Hewitt

| RD4-score01-1=6

| RD4-score01-2=6

| RD4-score01-3= 

| RD4-seed02= 

| RD4-team02={{flagicon|GER}} N Kiefer

| RD4-score02-1=2

| RD4-score02-2=4

| RD4-score02-3= 

}}

=Bottom half=

{{16TeamBracket-Compact-Tennis3-Byes

| RD1=First round

| RD2=Second round

| RD3=Quarterfinals

| RD4=Semifinals

| RD1-seed01=5

| RD1-team01={{flagicon|AUS}} M Philippoussis

| RD1-score01-1=6

| RD1-score01-2=6

| RD1-score01-3= 

| RD1-seed02= 

| RD1-team02={{flagicon|AUS}} A Kennedy

| RD1-score02-1=3

| RD1-score02-2=2

| RD1-score02-3= 

| RD1-seed03=Q

| RD1-team03={{flagicon|USA}} Z Fleishman

| RD1-score03-1=1

| RD1-score03-2=1

| RD1-score03-3= 

| RD1-seed04= 

| RD1-team04={{flagicon|USA}} M Chang

| RD1-score04-1=6

| RD1-score04-2=6

| RD1-score04-3= 

| RD1-seed05= 

| RD1-team05={{flagicon|KOR}} H-T Lee

| RD1-score05-1=6

| RD1-score05-2=65

| RD1-score05-3=2

| RD1-seed06= 

| RD1-team06={{flagicon|USA}} E Taino

| RD1-score06-1=3

| RD1-score06-2=77

| RD1-score06-3=6

| RD1-seed07= 

| RD1-team07={{flagicon|CAN}} F Niemeyer

| RD1-score07-1=6

| RD1-score07-2=62

| RD1-score07-3=4

| RD1-seed08=4

| RD1-team08={{flagicon|BRA}} G Kuerten

| RD1-score08-1=3

| RD1-score08-2=77

| RD1-score08-3=6

| RD1-seed09=7

| RD1-team09={{flagicon|RSA}} W Ferreira

| RD1-score09-1=6

| RD1-score09-2=6

| RD1-score09-3= 

| RD1-seed10=Q

| RD1-team10={{flagicon|USA}} R Yim

| RD1-score10-1=4

| RD1-score10-2=4

| RD1-score10-3= 

| RD1-seed11= 

| RD1-team11={{flagicon|USA}} A Bogomolov Jr.

| RD1-score11-1=6

| RD1-score11-2=6

| RD1-score11-3= 

| RD1-seed12= 

| RD1-team12={{flagicon|BRA}} R Mello

| RD1-score12-1=3

| RD1-score12-2=2

| RD1-score12-3= 

| RD1-seed13= 

| RD1-team13={{flagicon|USA}} R Ginepri

| RD1-score13-1=6

| RD1-score13-2=6

| RD1-score13-3= 

| RD1-seed14=Q

| RD1-team14={{flagicon|AUS}} A Ilie

| RD1-score14-1=1

| RD1-score14-2=1

| RD1-score14-3= 

| RD1-seed15= 

| RD1-team15={{flagicon|BEL}} X Malisse

| RD1-score15-1=6

| RD1-score15-2=5

| RD1-score15-3=3

| RD1-seed16=2

| RD1-team16={{flagicon|FRA}} S Grosjean

| RD1-score16-1=4

| RD1-score16-2=7

| RD1-score16-3=6

| RD2-seed01=5

| RD2-team01={{flagicon|AUS}} M Philippoussis

| RD2-score01-1=6

| RD2-score01-2=6

| RD2-score01-3= 

| RD2-seed02= 

| RD2-team02={{flagicon|USA}} M Chang

| RD2-score02-1=2

| RD2-score02-2=4

| RD2-score02-3= 

| RD2-seed03= 

| RD2-team03={{flagicon|USA}} E Taino

| RD2-score03-1=3

| RD2-score03-2=65

| RD2-score03-3= 

| RD2-seed04=4

| RD2-team04={{flagicon|BRA}} G Kuerten

| RD2-score04-1=6

| RD2-score04-2=77

| RD2-score04-3= 

| RD2-seed05=7

| RD2-team05={{flagicon|RSA}} W Ferreira

| RD2-score05-1=77

| RD2-score05-2=6

| RD2-score05-3= 

| RD2-seed06= 

| RD2-team06={{flagicon|USA}} A Bogomolov Jr.

| RD2-score06-1=61

| RD2-score06-2=3

| RD2-score06-3= 

| RD2-seed07= 

| RD2-team07={{flagicon|USA}} R Ginepri

| RD2-score07-1=2

| RD2-score07-2=3

| RD2-score07-3= 

| RD2-seed08=2

| RD2-team08={{flagicon|FRA}} S Grosjean

| RD2-score08-1=6

| RD2-score08-2=6

| RD2-score08-3= 

| RD3-seed01=5

| RD3-team01={{flagicon|AUS}} M Philippoussis

| RD3-score01-1=6

| RD3-score01-2=3

| RD3-score01-3=77

| RD3-seed02=4

| RD3-team02={{flagicon|BRA}} G Kuerten

| RD3-score02-1=3

| RD3-score02-2=6

| RD3-score02-3=65

| RD3-seed03=7

| RD3-team03={{flagicon|RSA}} W Ferreira

| RD3-score03-1=77

| RD3-score03-2=64

| RD3-score03-3=6

| RD3-seed04=2

| RD3-team04={{flagicon|FRA}} S Grosjean

| RD3-score04-1=64

| RD3-score04-2=77

| RD3-score04-3=2

| RD4-seed01=5

| RD4-team01={{flagicon|AUS}} M Philippoussis

| RD4-score01-1=4

| RD4-score01-2=5

| RD4-score01-3= 

| RD4-seed02=7

| RD4-team02={{flagicon|RSA}} W Ferreira

| RD4-score02-1=6

| RD4-score02-2=7

| RD4-score02-3= 

}}