The 2011 Winston-Salem Open was a men's tennis tournament played on outdoor hard courts. It was previously known as the Pilot Pen Tennis but was relocated to Winston-Salem. It was the 43rd edition of the Winston-Salem Open, and was part of the ATP World Tour 250 series of the 2011 ATP World Tour. It took place at the Wake Forest University in Winston-Salem, North Carolina, United States, from August 22 through August 27, 2011. It was the last event on the 2011 US Open Series before the 2011 US Open.
| 2011 Winston-Salem Open | |
|---|---|
| Date | August 22–27 |
| Edition | 43rd |
| Category | World Tour 250 series |
| Draw | 48S /16D |
| Prize money | $553,125 |
| Surface | Hard / outdoor |
| Location | Winston-Salem, North Carolina, United States |
| Venue | Wake Forest University |
| Champions | |
| Singles | |
 John Isner | |
| Doubles | |
 Jonathan Erlich / Andy Ram | |
Fourth-seeded John Isner won the singles title.
ATP entrants edit
Seeds edit
| Country | Player | Ranking* | Seed |
|---|---|---|---|
| USA
|
Andy Roddick | 15 | 1 |
 AUT
|
Jürgen Melzer | 18 | 2 |
 UKR
|
Alexandr Dolgopolov | 22 | 3 |
| USA
|
John Isner | 27 | 4 |
 RUS
|
Nikolay Davydenko | 31 | 5 |
 RSA
|
Kevin Anderson | 35 | 6 |
 ARG
|
Juan Mónaco | 39 | 7 |
 CYP
|
Marcos Baghdatis | 40 | 8 |
| UKR
|
Sergiy Stakhovsky | 42 | 9 |
 NED
|
Robin Haase | 43 | 10 |
| RUS
|
Dmitry Tursunov | 44 | 11 |
 ESP
|
Pablo Andújar | 46 | 12 |
 FIN
|
Jarkko Nieminen | 51 | 13 |
 BUL
|
Grigor Dimitrov | 56 | 14 |
 COL
|
Santiago Giraldo | 57 | 15 |
| RUS
|
Igor Kunitsyn | 59 | 16 |
- Seedings are based on the rankings of August 15, 2011.
Other entrants edit
The following players received wildcards into the singles main draw
The following players received entry from the qualifying draw:
The following players received entry from a lucky loser spot:
Finals edit
Singles edit
John Isner defeated 
Julien Benneteau, 4–6, 6–3, 6–4
- It was Isner's 2nd title of the year and 3rd of his career.
Doubles edit
Jonathan Erlich / Andy Ram defeated 
Christopher Kas / Alexander Peya, 7–6(7–2), 6–4