| 2021 Knoxville Challenger | ||||
|---|---|---|---|---|
| Date | 8–14 November | |||
| Edition | 17th | |||
| Surface | Hard (Indoor) | |||
| Location | Knoxville, United States | |||
| Champions | ||||
| Singles | ||||
 Christopher Eubanks | ||||
| Doubles | ||||
 Malek Jaziri /  Blaž Rola | ||||
| ||||
The 2021 Knoxville Challenger was a professional tennis tournament played on indoor hard courts. It was the seventeenth edition of the tournament which was part of the 2021 ATP Challenger Tour. It took place in Knoxville, United States between 8 and 14 November 2021.
Singles main-draw entrants
Seeds
| Country | Player | Rank | Seed |
|---|---|---|---|
| USA
|
Tennys Sandgren | 93 | 1 |
 GER
|
Daniel Altmaier | 106 | 2 |
 CAN
|
Vasek Pospisil | 113 | 3 |
| USA
|
Mitchell Krueger | 148 | 4 |
| USA
|
Jack Sock | 153 | 5 |
| USA
|
J. J. Wolf | 159 | 6 |
 KAZ
|
Dmitry Popko | 171 | 7 |
| USA
|
Bjorn Fratangelo | 172 | 8 |
- Rankings are as of November 1, 2021.
Other entrants
The following players received wildcards into the singles main draw:
The following player received entry into the singles main draw using a protected ranking:
The following players received entry into the singles main draw as alternates:
The following players received entry from the qualifying draw:
Champions
Singles
Main article: 2021 Knoxville Challenger – Singles- Christopher Eubanks def. Daniel Altmaier 6–3, 6–4.
Doubles
Main article: 2021 Knoxville Challenger – Doubles- Malek Jaziri / Blaž Rola def.
Hans Hach Verdugo / Miguel Ángel Reyes-Varela 3–6, 6–3, .
References
- "Rankings | Singles | ATP Tour | Tennis". ATP Tour.