2021 Heilbronner Neckarcup – Doubles
2021 tennis event results
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Kevin Krawietz and Andreas Mies were the defending champions[1] but chose not to defend their title.
Champions
Nathaniel Lammons
Jackson Withrow
Nathaniel Lammons Jackson WithrowRunners-up
André Göransson
Sem Verbeek
André Göransson
Sem VerbeekScore6–7(4–7), 6–4, [10–8]
| Doubles | |
|---|---|
| 2021 Heilbronner Neckarcup | |
| Champions | Nathaniel Lammons Jackson Withrow |
| Runners-up | André Göransson Sem Verbeek |
| Score | 6–7(4–7), 6–4, [10–8] |
Nathaniel Lammons and Jackson Withrow won the title after defeating André Göransson and Sem Verbeek 6–7(4–7), 6–4, [10–8] in the final.
Seeds
Aisam-ul-Haq Qureshi / 
Andrei Vasilevski (semifinals)- Sander Arends /
Divij Sharan (semifinals) - Nathaniel Lammons / Jackson Withrow (champions)
Rafael Matos / Felipe Meligeni Alves (quarterfinals)
Draw
Key
- Q = Qualifier
- WC = Wild card
- LL = Lucky loser
- Alt = Alternate
- ITF = ITF entry
- PR = Protected ranking
- SR = Special ranking
- SE = Special exempt
- JE = Junior exempt
- JR = Junior Accelerator Programme entrant
- CO = College Accelerator Programme entrant
- NG = Next Gen Accelerator Program entrant
- w/o = Walkover
- r = Retired
- d = Defaulted
| First round | Quarterfinals | Semifinals | Final | ||||||||||||||||||||||||
| 1 |  A-u-H Qureshi A Vasilevski
| 77 | 6 | ||||||||||||||||||||||||
 L Glasspool M Reid
| 3 | 6 | [10] | L Glasspool M Reid
| 61 | 4 | |||||||||||||||||||||
 LD Martínez D Vega Hernández
| 6 | 4 | [8] | 1 | A-u-H Qureshi A Vasilevski
| 4 | 4 | ||||||||||||||||||||
| 4 |  R Matos F Meligeni Alves
| 6 | 6 | A Göransson S Verbeek
| 6 | 6 | |||||||||||||||||||||
 I Sabanov M Sabanov
| 3 | 0 | 4 | R Matos F Meligeni Alves
| 4 | 65 | |||||||||||||||||||||
 D Masur D Molchanov
| 62 | 63 | A Göransson S Verbeek
| 6 | 77 | ||||||||||||||||||||||
| A Göransson S Verbeek
| 77 | 77 | A Göransson S Verbeek
| 77 | 4 | [8] | |||||||||||||||||||||
| WC |  T Altuna A Çelikbilek
| 4 | 4 | 3 | N Lammons J Withrow
| 64 | 6 | [10] | |||||||||||||||||||
| D Kudla M McDonald
| 6 | 6 | D Kudla M McDonald
| 64 | 2 | ||||||||||||||||||||||
 DE Galán T Griekspoor
| 3 | N Lammons J Withrow
| 77 | 6 | |||||||||||||||||||||||
| 3 | N Lammons J Withrow
| w/o | 3 | N Lammons J Withrow
| 6 | 6 | |||||||||||||||||||||
M Polmans A Sitak
| 6 | 6 | 2 | S Arends D Sharan
| 3 | 3 | |||||||||||||||||||||
| WC | A Begemann D Brown
| 4 | 4 | M Polmans A Sitak
| 2 | 6 | [8] | ||||||||||||||||||||
 T Daniel B Zapata Miralles
| 2 | 5 | 2 | S Arends D Sharan
| 6 | 3 | [10] | ||||||||||||||||||||
| 2 | S Arends D Sharan
| 6 | 7 | ||||||||||||||||||||||||