| Singles | |
|---|---|
| 2020 Thindown Challenger Biella | |
| Champion |  Facundo Bagnis |
| Runner-up |  Blaž Kavčič |
| Score | 6–7(4–7), 6–4, 0–0 ret. |
Gianluca Mager was the defending champion [1] but chose not to defend his title.
Facundo Bagnis won the title after Blaž Kavčič retired before the start of the third set, with the first two sets split at 6–7(4–7), 6–4.
Thiago Seyboth Wild (first round)
Christopher O'Connell (semifinals)
Sumit Nagal (first round) Facundo Bagnis (champion)
Paolo Lorenzi (first round) Federico Gaio (first round) Prajnesh Gunneswaran (first round)
Juan Pablo Varillas (first round)| Semifinals | Final | ||||||||||||
| Blaž Rola | 7 | 4 | 1 | ||||||||||
| PR | Blaž Kavčič | 5 | 6 | 6 | |||||||||
| PR | Blaž Kavčič | 77 | 4 | 0r | |||||||||
| 4 | Facundo Bagnis | 64 | 6 | 0 | |||||||||
| 4 | Facundo Bagnis | 6 | 6 | ||||||||||
| 2 | Christopher O'Connell | 4 | 4 | ||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | T Seyboth Wild | 66 | 63 | ||||||||||||||||||||||||
| B Rola | 78 | 77 | B Rola | 6 | 6 | ||||||||||||||||||||||
| A Collarini | 6 | 4 | 6 | A Collarini | 0 | 3 | |||||||||||||||||||||
| Q | A Arnaboldi | 2 | 6 | 2 | B Rola | 6 | 7 | ||||||||||||||||||||
| WC |  R Bertola | 7 | 7 | M Viola | 2 | 5 | |||||||||||||||||||||
 T Robredo | 5 | 5 | WC | R Bertola | 1 | 5 | |||||||||||||||||||||
| M Viola | 4 | 77 | 6 | M Viola | 6 | 7 | |||||||||||||||||||||
| 6 | F Gaio | 6 | 65 | 2 | B Rola | 7 | 4 | 1 | |||||||||||||||||||
| 3 | S Nagal | 64 | 4 | PR | B Kavčič | 5 | 6 | 6 | |||||||||||||||||||
| PR | B Kavčič | 77 | 6 | PR | B Kavčič | 3 | 6 | 6 | |||||||||||||||||||
| A Harris | 1 | 2 | Q |  C-h Tseng | 6 | 3 | 3 | ||||||||||||||||||||
| Q | C-h Tseng | 6 | 6 | PR | B Kavčič | 6 | 6 | ||||||||||||||||||||
| GM Moroni | 5 | 6 | 3 |  M Cressy | 4 | 4 | |||||||||||||||||||||
| Q | A Pellegrino | 7 | 3 | 6 | Q | A Pellegrino | 77 | 68 | 0 | ||||||||||||||||||
| M Cressy | 77 | 6 | M Cressy | 63 | 710 | 6 | |||||||||||||||||||||
| 7 | P Gunneswaran | 65 | 4 | ||||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 8 | JP Varillas | 6 | 68 | 62 | |||||||||||||||||||||||
| C Alcaraz | 2 | 710 | 77 | C Alcaraz | 3 | 4 | |||||||||||||||||||||
 L Lacko | 2 | 2 | F Horanský | 6 | 6 | ||||||||||||||||||||||
| F Horanský | 6 | 6 | F Horanský | 5 | 1 | ||||||||||||||||||||||
| WC | Gabriele Felline | 0 | 1 | 4 | F Bagnis | 7 | 6 | ||||||||||||||||||||
| Q |  A Müller | 6 | 6 | Q | A Müller | 3 | 4 | ||||||||||||||||||||
 R Cid Subervi | 5 | 1 | 4 | F Bagnis | 6 | 6 | |||||||||||||||||||||
| 4 | F Bagnis | 7 | 6 | 4 | F Bagnis | 6 | 6 | ||||||||||||||||||||
| 5 | P Lorenzi | 4 | 3 | 2 | C O'Connell | 4 | 4 | ||||||||||||||||||||
| WC | S Napolitano | 6 | 6 | WC | S Napolitano | 3 | 4 | ||||||||||||||||||||
 D Istomin | 77 | 6 | D Istomin | 6 | 6 | ||||||||||||||||||||||
 I Marchenko | 60 | 2 | D Istomin | 3 | 3 | ||||||||||||||||||||||
| G García López | 3 | 2 | 2 | C O'Connell | 6 | 6 | |||||||||||||||||||||
| JP Ficovich | 6 | 6 | JP Ficovich | 7 | 4 | 1 | |||||||||||||||||||||
| R Ramanathan | 4 | 2 | 2 | C O'Connell | 5 | 6 | 6 | ||||||||||||||||||||
| 2 | C O'Connell | 6 | 6 | ||||||||||||||||||||||||
Thomaz Bellucci was the defending champion, but lost to Fabio Fognini in the quarterfinals.
Tommy Robredo won the title, defeating Santiago Giraldo 6–2, 2–6, 7–6(7–5), in the final.
Federico Delbonis was the defending champion, but lost to Facundo Bagnis in the first round.
Pablo Cuevas won the title, defeating Luca Vanni in the final, 6–4, 3–6, 7–6(7–4).
David Ferrer was the three-time defending champion, but he chose to compete in Acapulco instead.
Rafael Nadal won the title, defeating Juan Mónaco in the final, 6–4, 6–1.
Dominic Thiem defeated Nicolás Almagro in the final, 7–6(7–2), 3–6, 7–6(7–4). He saved a match point en route to the title, in the semifinals against defending champion Rafael Nadal.
David Ferrer was the defending champion, but lost in the quarterfinals to Dominic Thiem.
Pablo Cuevas was the defending champion and successfully defended his title, defeating Pablo Carreño Busta in the final, 7–6(7–4), 6–3.
Facundo Bagnis was the defending champion.
Facundo Argüello was the defending champion but chose not to defend his title.
Eduardo Struvay was the defending champion but lost in the second round to Facundo Bagnis.
Fabio Fognini was the defending champion, but lost in the second round to Jürgen Zopp.
Fabio Fognini was the defending champion, but chose not to defend his title.
Tommy Robredo was the defending champion but retired in the first round against Maxime Janvier.
Hugo Dellien was the defending champion but chose not to defend his title.
Guido Andreozzi was the defending champion but lost to Jozef Kovalík in the final.
Pablo Andújar was the defending champion but chose not to defend his title.
Thiago Monteiro was the defending champion and successfully defended his title, defeating Marco Cecchinato 7–6(7–3), 6–7(6–8), 7–5 in the final.
Casper Ruud became the first Norwegian to win an ATP title, defeating Pedro Sousa in the final, 6–1, 6–4.
Matteo Berrettini defeated Aslan Karatsev in the final, 6–1, 3–6, 7–6(7–0) to win the men's singles tennis title at the 2021 Serbia Open.
Pedro Martínez defeated Sebastián Báez in the final, 4–6, 6–4, 6–4 to win the singles title at the 2022 Chile Open. It was his first ATP Tour title.
Defending champion Casper Ruud defeated João Sousa in the final, 7–6(7–3), 4–6, 7–6(7–1) to win the singles tennis title at the 2022 Geneva Open.