2008 US Open – Boys' singles

Seeds

1. TPE Yang Tsung-hua (semifinals)
2. AUS Bernard Tomic (first round)
3. BUL Grigor Dimitrov (champion)
4. FIN Henri Kontinen (quarterfinals)
5. MEX César Ramírez (second round)
6. FRA Guillaume Rufin (third round)
7. BRA José Pereira (first round)
8. BRA Henrique Cunha (first round)
9. USA Ryan Harrison (third round)
10. ARG Juan Vazquez-Valenzuela (second round)
11. GER Cedrik-Marcel Stebe (quarterfinals)
12. IND Yuki Bhambri (second round)
13. USA Bradley Klahn (third round)
14. ESA Marcelo Arévalo (third round)
15. THA Peerakit Siributwong (third round)
16. (withdrew)

Draw

Finals

| team-width=175 | RD1-seed1=1 | RD1-team1=TPE Yang Tsung-hua | RD1-score1-1=6 | RD1-score1-2=65 | RD1-score1-3=6 | RD1-seed2=WC | RD1-team2=USA Rhyne Williams | RD1-score2-1=3 | RD1-score2-2=77 | RD1-score2-3=3 | RD1-seed3=3 | RD1-team3=BUL Grigor Dimitrov | RD1-score3-1=6 | RD1-score3-2=6 | RD1-score3-3= | RD1-seed4= | RD1-team4=USA Chase Buchanan | RD1-score4-1=4 | RD1-score4-2=3 | RD1-score4-3= | RD1-seed5= | RD1-team5=SRB Filip Krajinović | RD1-score5-1=78 | RD1-score5-2=77 | RD1-score5-3= | RD1-seed6=4 | RD1-team6=FIN Henri Kontinen | RD1-score6-1=66 | RD1-score6-2=65 | RD1-score6-3= | RD1-seed7=11 | RD1-team7=GER Cedrik-Marcel Stebe | RD1-score7-1=3 | RD1-score7-2=6 | RD1-score7-3=3 | RD1-seed8=Q | RD1-team8=USA Devin Britton | RD1-score8-1=6 | RD1-score8-2=3 | RD1-score8-3=6 | RD2-seed1=1 | RD2-team1=TPE Yang Tsung-hua | RD2-score1-1=3 | RD2-score1-2=7 | RD2-score1-3=2 | RD2-seed2=3 | RD2-team2=BUL Grigor Dimitrov | RD2-score2-1=6 | RD2-score2-2=5 | RD2-score2-3=6 | RD2-seed3= | RD2-team3=SRB Filip Krajinović | RD2-score3-1=6 | RD2-score3-2=4 | RD2-score3-3=2 | RD2-seed4=Q | RD2-team4=USA Devin Britton | RD2-score4-1=1 | RD2-score4-2=6 | RD2-score4-3=6 | RD3-seed1=3 | RD3-team1=BUL Grigor Dimitrov | RD3-score1-1=6 | RD3-score1-2=6 | RD3-score1-3= | RD3-seed2=Q | RD3-team2=USA Devin Britton | RD3-score2-1=4 | RD3-score2-2=3 | RD3-score2-3=

Top half

Section 1

|team-width=225 | RD1-seed01=1 | RD1-team01=TPE Tsung-hua Yang | RD1-score01-1=78 | RD1-score01-2=6 | RD1-score01-3= | RD1-seed02= | RD1-team02=AUT Nikolaus Moser | RD1-score02-1=66 | RD1-score02-2=4 | RD1-score02-3= | RD1-seed03=WC | RD1-team03=USA Raymond Sarmiento | RD1-score03-1=63 | RD1-score03-2=63 | RD1-score03-3= | RD1-seed04=Q | RD1-team04=GER Dominik Schultz | RD1-score04-1=77 | RD1-score04-2=77 | RD1-score04-3= | RD1-seed05= | RD1-team05=GBR Daniel Smethurst | RD1-score05-1=1 | RD1-score05-2=7 | RD1-score05-3=7 | RD1-seed06=WC | RD1-team06=USA Evan King | RD1-score06-1=6 | RD1-score06-2=5 | RD1-score06-3=5 | RD1-seed07= | RD1-team07=BIH Mirza Bašić | RD1-score07-1=4 | RD1-score07-2=3 | RD1-score07-3= | RD1-seed08=15 | RD1-team08=THA Peerakit Siributwong | RD1-score08-1=6 | RD1-score08-2=6 | RD1-score08-3= | RD1-seed09=9 | RD1-team09=USA Ryan Harrison | RD1-score09-1=6 | RD1-score09-2=6 | RD1-score09-3= | RD1-seed10= | RD1-team10=FRA Adrien Puget | RD1-score10-1=3 | RD1-score10-2=2 | RD1-score10-3= | RD1-seed11=Q | RD1-team11=JPN Hiroyasu Ehara | RD1-score11-1=6 | RD1-score11-2=7 | RD1-score11-3= | RD1-seed12=LL | RD1-team12=USA James Seal | RD1-score12-1=2 | RD1-score12-2=5 | RD1-score12-3= | RD1-seed13=WC | RD1-team13=USA Rhyne Williams | RD1-score13-1=6 | RD1-score13-2=6 | RD1-score13-3= | RD1-seed14= | RD1-team14=SLO Borut Puc | RD1-score14-1=2 | RD1-score14-2=4 | RD1-score14-3= | RD1-seed15= | RD1-team15=CRO Marin Draganja | RD1-score15-1=2 | RD1-score15-2=4 | RD1-score15-3= | RD1-seed16=5 | RD1-team16=MEX César Ramírez | RD1-score16-1=6 | RD1-score16-2=6 | RD1-score16-3= | RD2-seed01=1 | RD2-team01=TPE T-h Yang | RD2-score01-1=6 | RD2-score01-2=6 | RD2-score01-3= | RD2-seed02=Q | RD2-team02=GER D Schultz | RD2-score02-1=1 | RD2-score02-2=1 | RD2-score02-3= | RD2-seed03= | RD2-team03=GBR D Smethurst | RD2-score03-1=3 | RD2-score03-2=2 | RD2-score03-3= | RD2-seed04=15 | RD2-team04=THA P Siributwong | RD2-score04-1=6 | RD2-score04-2=6 | RD2-score04-3= | RD2-seed05=9 | RD2-team05=USA R Harrison | RD2-score05-1=6 | RD2-score05-2=3 | RD2-score05-3=6 | RD2-seed06=Q | RD2-team06=JPN H Ehara | RD2-score06-1=1 | RD2-score06-2=6 | RD2-score06-3=2 | RD2-seed07=WC | RD2-team07=USA R Williams | RD2-score07-1=7 | RD2-score07-2=77 | RD2-score07-3= | RD2-seed08=5 | RD2-team08=MEX C Ramírez | RD2-score08-1=5 | RD2-score08-2=62 | RD2-score08-3= | RD3-seed01=1 | RD3-team01=TPE T-h Yang | RD3-score01-1=3 | RD3-score01-2=6 | RD3-score01-3=6 | RD3-seed02=15 | RD3-team02=THA P Siributwong | RD3-score02-1=6 | RD3-score02-2=2 | RD3-score02-3=1 | RD3-seed03=9 | RD3-team03=USA R Harrison | RD3-score03-1=77 | RD3-score03-2=5 | RD3-score03-3=3 | RD3-seed04=WC | RD3-team04=USA R Williams | RD3-score04-1=65 | RD3-score04-2=7 | RD3-score04-3=6 | RD4-seed01=1 | RD4-team01=TPE T-h Yang | RD4-score01-1=6 | RD4-score01-2=65 | RD4-score01-3=6 | RD4-seed02=WC | RD4-team02=USA R Williams | RD4-score02-1=3 | RD4-score02-2=77 | RD4-score02-3=3

Section 2

|team-width=225 | RD1-seed01=3 | RD1-team01=BUL Grigor Dimitrov | RD1-score01-1=6 | RD1-score01-2=6 | RD1-score01-3= | RD1-seed02=Q | RD1-team02=FRA Julien Obry | RD1-score02-1=2 | RD1-score02-2=2 | RD1-score02-3= | RD1-seed03= | RD1-team03=USA Ty D Trombetta | RD1-score03-1=6 | RD1-score03-2=6 | RD1-score03-3= | RD1-seed04= | RD1-team04=COL Juan-Carlos Spir | RD1-score04-1=3 | RD1-score04-2=1 | RD1-score04-3= | RD1-seed05=Q | RD1-team05=DOM José Hernández | RD1-score05-1=2 | RD1-score05-2=2 | RD1-score05-3= | RD1-seed06= | RD1-team06=AUS Matt Reid | RD1-score06-1=6 | RD1-score06-2=6 | RD1-score06-3= | RD1-seed07=LL | RD1-team07=GER Richard Becker | RD1-score07-1=4 | RD1-score07-2=4 | RD1-score07-3= | RD1-seed08=14 | RD1-team08=ESA Marcelo Arévalo | RD1-score08-1=6 | RD1-score08-2=6 | RD1-score08-3= | RD1-seed09=10 | RD1-team09=ARG Juan Vazquez-Valenzuela | RD1-score09-1=6 | RD1-score09-2=6 | RD1-score09-3= | RD1-seed10= | RD1-team10=USA Tennys Sandgren | RD1-score10-1=4 | RD1-score10-2=2 | RD1-score10-3= | RD1-seed11= | RD1-team11=RUS Mikhail Biryukov | RD1-score11-1=4 | RD1-score11-2=2 | RD1-score11-3= | RD1-seed12= | RD1-team12=USA Chase Buchanan | RD1-score12-1=6 | RD1-score12-2=6 | RD1-score12-3= | RD1-seed13= | RD1-team13=ITA Alessandro Giannessi | RD1-score13-1=6 | RD1-score13-2=65 | RD1-score13-3=77 | RD1-seed14=Q | RD1-team14=USA Harry Fowler | RD1-score14-1=4 | RD1-score14-2=77 | RD1-score14-3=63 | RD1-seed15= | RD1-team15=GBR Daniel Cox | RD1-score15-1=5 | RD1-score15-2=77 | RD1-score15-3=6 | RD1-seed16=8 | RD1-team16=BRA Henrique Cunha | RD1-score16-1=7 | RD1-score16-2=61 | RD1-score16-3=4 | RD2-seed01=3 | RD2-team01=BUL G Dimitrov | RD2-score01-1=7 | RD2-score01-2=6 | RD2-score01-3= | RD2-seed02= | RD2-team02=USA T D Trombetta | RD2-score02-1=5 | RD2-score02-2=1 | RD2-score02-3= | RD2-seed03= | RD2-team03=AUS M Reid | RD2-score03-1=6 | RD2-score03-2=5 | RD2-score03-3=4 | RD2-seed04=14 | RD2-team04=ESA M Arévalo | RD2-score04-1=1 | RD2-score04-2=7 | RD2-score04-3=6 | RD2-seed05=10 | RD2-team05=ARG J Vazquez-Valenzuela | RD2-score05-1=1 | RD2-score05-2=0 | RD2-score05-3= | RD2-seed06= | RD2-team06=USA C Buchanan | RD2-score06-1=6 | RD2-score06-2=6 | RD2-score06-3= | RD2-seed07= | RD2-team07=ITA A Giannessi | RD2-score07-1=0 | RD2-score07-2=1 | RD2-score07-3= | RD2-seed08= | RD2-team08=GBR D Cox | RD2-score08-1=6 | RD2-score08-2=6 | RD2-score08-3= | RD3-seed01=3 | RD3-team01=BUL G Dimitrov | RD3-score01-1=6 | RD3-score01-2=6 | RD3-score01-3= | RD3-seed02=14 | RD3-team02=ESA M Arévalo | RD3-score02-1=3 | RD3-score02-2=4 | RD3-score02-3= | RD3-seed03= | RD3-team03=USA C Buchanan | RD3-score03-1=6 | RD3-score03-2=79 | RD3-score03-3= | RD3-seed04= | RD3-team04=GBR D Cox | RD3-score04-1=3 | RD3-score04-2=67 | RD3-score04-3= | RD4-seed01=3 | RD4-team01=BUL G Dimitrov | RD4-score01-1=6 | RD4-score01-2=6 | RD4-score01-3= | RD4-seed02= | RD4-team02=USA C Buchanan | RD4-score02-1=4 | RD4-score02-2=3 | RD4-score02-3=

Bottom half

Section 3

|team-width=170 | RD1-seed01=6 | RD1-team01=FRA Guillaume Rufin | RD1-score01-1=6 | RD1-score01-2=6 | RD1-score01-3= | RD1-seed02= | RD1-team02=SLO Blaz Rola | RD1-score02-1=1 | RD1-score02-2=1 | RD1-score02-3= | RD1-seed03= | RD1-team03=AUS Dane Propoggia | RD1-score03-1=0 | RD1-score03-2=2 | RD1-score03-3= | RD1-seed04= | RD1-team04=GBR Marcus Willis | RD1-score04-1=6 | RD1-score04-2=6 | RD1-score04-3= | RD1-seed05= | RD1-team05=SRB Filip Krajinović | RD1-score05-1=65 | RD1-score05-2=6 | RD1-score05-3=4 | RD1-seed06= | RD1-team06=USA Jarmere Jenkins | RD1-score06-1=77 | RD1-score06-2=4 | RD1-score06-3=0r | RD1-seed07=WC | RD1-team07=USA Denis Kudla | RD1-score07-1=2 | RD1-score07-2=7 | RD1-score07-3=3 | RD1-seed08=12 | RD1-team08=IND Yuki Bhambri | RD1-score08-1=6 | RD1-score08-2=5 | RD1-score08-3=6 | RD1-seed09=LL | RD1-team09=PUR Alex Llompart | RD1-score09-1=6 | RD1-score09-2=3 | RD1-score09-3=6 | RD1-seed10=WC | RD1-team10=USA Christian Harrison | RD1-score10-1=4 | RD1-score10-2=6 | RD1-score10-3=3 | RD1-seed11=WC | RD1-team11=USA Jordan Cox | RD1-score11-1=6 | RD1-score11-2=79 | RD1-score11-3= | RD1-seed12=LL | RD1-team12=BEL Yannik Reuter | RD1-score12-1=4 | RD1-score12-2=67 | RD1-score12-3= | RD1-seed13= | RD1-team13=CRO Dino Marcan | RD1-score13-1=6 | RD1-score13-2=6 | RD1-score13-3= | RD1-seed14= | RD1-team14=EGY Karim-Mohamed Maamoun | RD1-score14-1=2 | RD1-score14-2=2 | RD1-score14-3= | RD1-seed15=Q | RD1-team15=ZIM Takanyi Garanganga | RD1-score15-1=67 | RD1-score15-2=3 | RD1-score15-3= | RD1-seed16=4 | RD1-team16=FIN Henri Kontinen | RD1-score16-1=79 | RD1-score16-2=6 | RD1-score16-3= | RD2-seed01=6 | RD2-team01=FRA G Rufin | RD2-score01-1=3 | RD2-score01-2=7 | RD2-score01-3=6 | RD2-seed02= | RD2-team02=GBR M Willis | RD2-score02-1=6 | RD2-score02-2=5 | RD2-score02-3=4 | RD2-seed03= | RD2-team03=SRB F Krajinović | RD2-score03-1=77 | RD2-score03-2=6 | RD2-score03-3= | RD2-seed04=12 | RD2-team04=IND Y Bhambri | RD2-score04-1=65 | RD2-score04-2=4 | RD2-score04-3= | RD2-seed05=LL | RD2-team05=PUR A Llompart | RD2-score05-1=7 | RD2-score05-2=6 | RD2-score05-3= | RD2-seed06=WC | RD2-team06=USA J Cox | RD2-score06-1=5 | RD2-score06-2=2 | RD2-score06-3= | RD2-seed07= | RD2-team07=CRO D Marcan | RD2-score07-1=3 | RD2-score07-2=77 | RD2-score07-3=3 | RD2-seed08=4 | RD2-team08=FIN H Kontinen | RD2-score08-1=6 | RD2-score08-2=65 | RD2-score08-3=6 | RD3-seed01=6 | RD3-team01=FRA G Rufin | RD3-score01-1=4 | RD3-score01-2=63 | RD3-score01-3= | RD3-seed02= | RD3-team02=SRB F Krajinović | RD3-score02-1=6 | RD3-score02-2=77 | RD3-score02-3= | RD3-seed03=LL | RD3-team03=PUR A Llompart | RD3-score03-1=3 | RD3-score03-2=1 | RD3-score03-3= | RD3-seed04=4 | RD3-team04=FIN H Kontinen | RD3-score04-1=6 | RD3-score04-2=6 | RD3-score04-3= | RD4-seed01= | RD4-team01=SRB F Krajinović | RD4-score01-1=78 | RD4-score01-2=77 | RD4-score01-3= | RD4-seed02=4 | RD4-team02=FIN H Kontinen | RD4-score02-1=66 | RD4-score02-2=65 | RD4-score02-3=

Section 4

|team-width=225 | RD1-seed01=7 | RD1-team01=BRA José Pereira | RD1-score01-1=2 | RD1-score01-2=3 | RD1-score01-3= | RD1-seed02= | RD1-team02=ARG Guido Pella | RD1-score02-1=6 | RD1-score02-2=6 | RD1-score02-3= | RD1-seed03= | RD1-team03=CHN Di Wun | RD1-score03-1=6 | RD1-score03-2=6 | RD1-score03-3= | RD1-seed04= | RD1-team04=AUT Tristan-Samuel Weissborn | RD1-score04-1=3 | RD1-score04-2=4 | RD1-score04-3= | RD1-seed05=WC | RD1-team05=USA Alexander Domijan | RD1-score05-1=77 | RD1-score05-2=6 | RD1-score05-3= | RD1-seed06= | RD1-team06=THA Kittipong Wachiramanowong | RD1-score06-1=63 | RD1-score06-2=4 | RD1-score06-3= | RD1-seed07= | RD1-team07=TPE Cheng-peng Hsieh | RD1-score07-1=3 | RD1-score07-2=2 | RD1-score07-3= | RD1-seed08=11 | RD1-team08=GER Cedrik-Marcel Stebe | RD1-score08-1=6 | RD1-score08-2=6 | RD1-score08-3= | RD1-seed09=13 | RD1-team09=USA Bradley Klahn | RD1-score09-1=6 | RD1-score09-2=6 | RD1-score09-3= | RD1-seed10= | RD1-team10=ESP Pablo Carreno-Busta | RD1-score10-1=4 | RD1-score10-2=3 | RD1-score10-3= | RD1-seed11=WC | RD1-team11=USA Robert Johannes Van Overbeek | RD1-score11-1=2 | RD1-score11-2=5 | RD1-score11-3= | RD1-seed12= | RD1-team12=INA Christopher Rungkat | RD1-score12-1=6 | RD1-score12-2=7 | RD1-score12-3= | RD1-seed13= | RD1-team13=ITA Giacomo Miccini | RD1-score13-1=5 | RD1-score13-2=4 | RD1-score13-3= | RD1-seed14=Q | RD1-team14=USA Matthew Kandath | RD1-score14-1=7 | RD1-score14-2=6 | RD1-score14-3= | RD1-seed15=Q | RD1-team15=USA Devin Britton | RD1-score15-1=3 | RD1-score15-2=6 | RD1-score15-3=6 | RD1-seed16=2 | RD1-team16=AUS Bernard Tomic | RD1-score16-1=6 | RD1-score16-2=3 | RD1-score16-3=2 | RD2-seed01= | RD2-team01=ARG G Pella | RD2-score01-1=6 | RD2-score01-2=6 | RD2-score01-3= | RD2-seed02= | RD2-team02=CHN D Wun | RD2-score02-1=3 | RD2-score02-2=1 | RD2-score02-3= | RD2-seed03=WC | RD2-team03=USA A Domijan | RD2-score03-1=3 | RD2-score03-2=6 | RD2-score03-3=3 | RD2-seed04=11 | RD2-team04=GER C-M Stebe | RD2-score04-1=6 | RD2-score04-2=4 | RD2-score04-3=6 | RD2-seed05=13 | RD2-team05=USA B Klahn | RD2-score05-1=4 | RD2-score05-2=6 | RD2-score05-3=6 | RD2-seed06= | RD2-team06=INA C Rungkat | RD2-score06-1=6 | RD2-score06-2=1 | RD2-score06-3=3 | RD2-seed07=Q | RD2-team07=USA M Kandath | RD2-score07-1=1 | RD2-score07-2=4 | RD2-score07-3= | RD2-seed08=Q | RD2-team08=USA D Britton | RD2-score08-1=6 | RD2-score08-2=6 | RD2-score08-3= | RD3-seed01= | RD3-team01=ARG G Pella | RD3-score01-1=0 | RD3-score01-2=7 | RD3-score01-3=1 | RD3-seed02=11 | RD3-team02=GER C-M Stebe | RD3-score02-1=6 | RD3-score02-2=5 | RD3-score02-3=6 | RD3-seed03=13 | RD3-team03=USA B Klahn | RD3-score03-1=4 | RD3-score03-2=3 | RD3-score03-3= | RD3-seed04=Q | RD3-team04=USA D Britton | RD3-score04-1=6 | RD3-score04-2=6 | RD3-score04-3= | RD4-seed01=11 | RD4-team01=GER C-M Stebe | RD4-score01-1=3 | RD4-score01-2=6 | RD4-score01-3=3 | RD4-seed02=Q | RD4-team02=USA D Britton | RD4-score02-1=6 | RD4-score02-2=3 | RD4-score02-3=6