| Doubles | |
|---|---|
| 2021 Biella Challenger V | |
| Champions |  André Göransson  Nathaniel Lammons |
| Runners-up |  Rafael Matos Felipe Meligeni Alves |
| Score | 7–6(7–3), 6–3 |
Lloyd Glasspool and Matt Reid were the defending champions [1] but chose not to defend their title.
André Göransson and Nathaniel Lammons won the title after defeating Rafael Matos and Felipe Meligeni Alves 7–6(7–3), 6–3 in the final.
André Göransson / Nathaniel Lammons (champions) Rafael Matos / Felipe Meligeni Alves (final)
Sergio Martos Gornés / 
Artem Sitak (semifinals)
Sadio Doumbia / Fabien Reboul (semifinals)| First round | Quarterfinals | Semifinals | Final | ||||||||||||||||||||||||
| 1 | A Göransson N Lammons | 6 | 6 | ||||||||||||||||||||||||
 T Ito G Soeda | 1 | 0 | 1 | A Göransson N Lammons | 6 | 3 | [10] | ||||||||||||||||||||
| WC |  Pietro Buscaglione Pietro Rondoni | 2 | 2 |  S Balaji J Nedunchezhiyan | 4 | 6 | [8] | ||||||||||||||||||||
| S Balaji J Nedunchezhiyan | 6 | 6 | 1 | A Göransson N Lammons | 710 | 6 | |||||||||||||||||||||
| 4 | S Doumbia F Reboul | 77 | 63 | [10] | 4 | S Doumbia F Reboul | 68 | 3 | |||||||||||||||||||
| WC | M Bortolotti  C Rodríguez | 65 | 77 | [2] | 4 | S Doumbia F Reboul | 6 | 6 | |||||||||||||||||||
 R Bemelmans A Müller | 2 | 2 | K Coppejans J Menezes | 4 | 1 | ||||||||||||||||||||||
| K Coppejans J Menezes | 6 | 6 | 1 | A Göransson N Lammons | 77 | 6 | |||||||||||||||||||||
 L Margaroli  A Shamasdin | 4 | 6 | [10] | 2 | R Matos F Meligeni Alves | 63 | 3 | ||||||||||||||||||||
 H Dellien F Zeballos | 6 | 4 | [7] | L Margaroli A Shamasdin | 1 | 64 | |||||||||||||||||||||
 L Mayer  JP Varillas | 3 | 64 | 3 | S Martos Gornés A Sitak | 6 | 77 | |||||||||||||||||||||
| 3 | S Martos Gornés A Sitak | 6 | 77 | 3 | S Martos Gornés A Sitak | 2 | 2 | ||||||||||||||||||||
| G Andreozzi G Durán | 65 | 6 | [3] | 2 | R Matos F Meligeni Alves | 6 | 6 | ||||||||||||||||||||
 J Domingues P Sousa | 77 | 3 | [10] | J Domingues P Sousa | 5 | 3 | |||||||||||||||||||||
| WC |  T Gabashvili L Vanni | 4 | 1 | 2 | R Matos F Meligeni Alves | 7 | 6 | ||||||||||||||||||||
| 2 | R Matos F Meligeni Alves | 6 | 6 | ||||||||||||||||||||||||
Nathaniel Lammons is an American professional tennis player who specializes in doubles. He has been ranked by the Association of Tennis Professionals (ATP) as high as world No. 30 in doubles, which he achieved on 8 May 2023. Lammons also attained a career-high singles ranking of world No. 591 in January 2019.
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