==== 5. dag (31. august) ====
* Seedede ude:
** [[US Open 2012 (damesingle)|Damesingle]]: {{flagicon|CHN}} [[Li Na]] [9], {{flagicon|CZE}} [[Lucie Šafářová]] [15], {{flagicon|CHN}} [[Zheng Jie]] [28], {{flagicon|USA}} [[Varvara Lepchenko]] [31]
** [[US Open 2012 (herredouble)|Herredouble]]: {{flagicon|GBR}} [[Jonathan Marray]] / {{flagicon|DNK}} [[Frederik Løchte Nielsen|Frederik Nielsen]] [11]
** [[US Open 2012 (damedouble)|Damedouble]]: {{flagicon|CZE}} [[Iveta Benešová]] / {{flagicon|CZE}} [[Barbora Záhlavová-Strýcová]] [10], {{flagicon|AUS}} [[Anastasia Rodionova]] / {{flagicon|KAZ}} [[Galina Voskobojeva]] [12], {{flagicon|POL}} [[Klaudia Jans-Ignacik]] / {{flagicon|FRA}} [[Kristina Mladenovic]] [15]
** [[2012 US Open – Mixed Doubles|Mixed Doubles]]: {{flagicon|USA}} [[Lisa Raymond]] / {{flagicon|USA}} [[Mike Bryan]] [2]
{| class="wikitable collapsible uncollapsed" style="margin:auto;"
! colspan="4" style="white-space:nowrap;" | Kampe på hovedbanerne
|-
! Event
! Vinder
! Taber
! Resultat
|-
!colspan=4|'''Kampe på Arthur Ashe Stadium
|-
|[[US Open 2012 (damesingle)#Sektion 2|Damesingle 3. runde]]
|{{flagicon|AUS}} '''[[Samantha Stosur]] [7] 
|{{flagicon|USA}} [[Varvara Lepchenko]] [31]
|7–6<sup>(7–5)</sup>, 6–2
|-
|[[US Open 2012 (herresingle)#Sektion 8|Herresingle 2. runde]]
|{{flagicon|SRB}} '''[[Novak Djokovic]] [2] 
|{{flagicon|BRA}} [[Rogerio Dutra Silva]] 
|6–2, 6–1, 6–2
|-
|[[US Open 2012 (damesingle)#Sektion 3|Damesingle 3. runde]]
| {{flagicon|RUS}} '''[[Maria Sharapova]] [3] 
|{{flagicon|USA}} [[Mallory Burdette]] [WC]
|6–1, 6–1
|-
|[[US Open 2012 (damedouble)#Sektion 3|Damedouble 2. runde]]
|'''{{flagicon|USA}} [[Serena Williams]] [WC] <br /> {{flagicon|USA}} [[Venus Williams]] [WC]
|{{flagicon|POL}} [[Klaudia Jans-Ignacik]] [15] <br /> {{flagicon|FRA}} [[Kristina Mladenovic]] [15] 
|6–4, 6–0
|-
|-bgcolor=lavender
|[[US Open 2012 (herresingle)#Sektion 7|Herresingle 2. runde]]
|{{flagicon|USA}} '''[[Andy Roddick]] [20]
|{{flagicon|AUS}} [[Bernard Tomic]]
|6–3, 6–4, 6–0
|-bgcolor=lavender
|[[US Open 2012 (damesingle)#Sektion 1|Damesingle 3. runde]]
|{{flagicon|BLR}} '''[[Victoria Azarenka]] [1]
|{{flagicon|CHN}} [[Zheng Jie]] [28]
|6–0, 6–1
|-
!colspan=4|'''Matches on [[Louis Armstrong Stadium]]
|-
|[[US Open 2012 (damesingle)#Sektion 2|Damesingle 3. runde]]
|{{flagicon|GBR}} '''[[Laura Robson]]
|{{flagicon|CHN}} [[Li Na (tennis)|Li Na]] [9]
|6–4, 6–7<sup>(5–7)</sup>, 6–2
|-
|[[US Open 2012 (herresingle)#Sektion 7|herresingle 2. runde]]
|{{flagicon|ARG}} '''[[Juan Martín del Potro]] [7] 
|{{flagicon|USA}} [[Ryan Harrison (tennis)|Ryan Harrison]] 
|6–2, 6–3, 2–6, 6–2
|-
|[[US Open 2012 (herresingle)#Sektion 5|herresingle 2. runde]]
|{{flagicon|USA}} '''[[John Isner]]  [9]
|{{flagicon|FIN}} [[Jarkko Nieminen]] 
|6–3, 6–7<sup>(5–7)</sup>, 6–4, 6–3
|-
!colspan=4|'''Matches on the Grandstand
|-
|[[US Open 2012 (herresingle)#Sektion 6|Herresingle 2. runde]]
|{{flagicon|ESP}} '''[[David Ferrer]] [4]
|{{flagicon|NED}} [[Igor Sijsling]] [Q] 
|6–2, 6–3, 7–6<sup>(14–12)</sup>
|-
|[[US Open 2012 (damesingle)#Sektion 4|Damesingle 3. runde]]
|{{flagicon|CZE}} '''[[Petra Kvitová]] [5]
|{{flagicon|FRA}} [[Pauline Parmentier]] 
|6–4, 6–4
|-
|[[US Open 2012 (damesingle)#Sektion 3|Damesingle 3. runde]]
|{{flagicon|RUS}} '''[[Nadia Petrova]] [19] 
|{{flagicon|CZE}} [[Lucie Šafářová]] [15]
|6–4, 7–5
|-
|[[US Open 2012 (herresingle)#Sektion 5|Herresingle 2. runde]]
|{{flagicon|SRB}} '''[[Janko Tipsarević]] [8]
|{{flagicon|USA}} [[Brian Baker (tennis)|Brian Baker]]
|6–4, 6–3, 6–4
|-
!colspan=4|''Colored background indicates a night match''
|}
</center>
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