| Singles | |
|---|---|
| 2021 Little Rock Challenger | |
| Champion |  Jack Sock |
| Runner-up |  Emilio Gómez |
| Final score | 7–5, 6–4 |
Dudi Sela was the defending champion [1] but chose not to defend his title.
Jack Sock won the title after defeating Emilio Gómez 7–5, 6–4 in the final.
Jason Jung (quarterfinals) Michael Mmoh (withdrew) Emilio Gómez (final) Ernesto Escobedo (second round) Mitchell Krueger (semifinals) Thai-Son Kwiatkowski (quarterfinals)
Roberto Cid Subervi (first round) Christopher Eubanks (second round)
Peter Polansky (first round)| Semifinals | Final | ||||||||||||
| 5 | Mitchell Krueger | 4 | 6 | 3 | |||||||||
| Jack Sock | 6 | 1 | 6 | ||||||||||
| Jack Sock | 7 | 6 | |||||||||||
| 3 | Emilio Gómez | 5 | 4 | ||||||||||
| 3 | Emilio Gómez | 6 | 6 | ||||||||||
 Gonçalo Oliveira | 4 | 2 | |||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | J Jung | 6 | 6 | ||||||||||||||||||||||||
| C Harrison | 1 | 2 | 1 | J Jung | 6 | 6 | |||||||||||||||||||||
 N Jarry | 4 | 2 |  H Moriya | 3 | 4 | ||||||||||||||||||||||
| H Moriya | 6 | 6 | 1 | J Jung | 6 | 2 | 1 | ||||||||||||||||||||
 D King | 6 | 6 | 5 | M Krueger | 3 | 6 | 6 | ||||||||||||||||||||
 TA Tirante | 4 | 4 | D King | 3 | 2 | ||||||||||||||||||||||
| WC | Z Khan | 2 | 4 | 5 | M Krueger | 6 | 6 | ||||||||||||||||||||
| 5 | M Krueger | 6 | 6 | 5 | M Krueger | 4 | 6 | 3 | |||||||||||||||||||
| 4 | E Escobedo | 6 | 6 | J Sock | 6 | 1 | 6 | ||||||||||||||||||||
| D Young | 3 | 0 | 4 | E Escobedo | 79 | 69 | 65 | ||||||||||||||||||||
| J Sock | 6 | 6 | J Sock | 67 | 711 | 77 | |||||||||||||||||||||
| R Quiroz | 3 | 1 | J Sock | 63 | 77 | 6 | |||||||||||||||||||||
| A Ritschard | 77 | 4 | 6 | 6 | T-S Kwiatkowski | 77 | 65 | 4 | |||||||||||||||||||
| K King | 65 | 6 | 4 | A Ritschard | 7 | 3 | 2 | ||||||||||||||||||||
| Q | S Kozlov | 2 | 1 | 6 | T-S Kwiatkowski | 5 | 6 | 6 | |||||||||||||||||||
| 6 | T-S Kwiatkowski | 6 | 6 | ||||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 8 | C Eubanks | 6 | 77 | ||||||||||||||||||||||||
 N Mejía | 3 | 63 | 8 | C Eubanks | 4 | 64 | |||||||||||||||||||||
| U Blanch | 5 | 6 | 6 | U Blanch | 6 | 77 | |||||||||||||||||||||
| Q | Z Svajda | 7 | 3 | 3 | U Blanch | 2 | 0 | ||||||||||||||||||||
| Q | A Galarneau | 6 | 6 | 3 | E Gómez | 6 | 6 | ||||||||||||||||||||
| JC Aragone | 3 | 3 | Q | A Galarneau | 4 | 4 | |||||||||||||||||||||
| A Velotti | 62 | 3 | 3 | E Gómez | 6 | 6 | |||||||||||||||||||||
| 3 | E Gómez | 77 | 6 | 3 | E Gómez | 6 | 6 | ||||||||||||||||||||
| 7 | R Cid Subervi | 3 | 4 | G Oliveira | 4 | 2 | |||||||||||||||||||||
 S Mukund | 6 | 6 | S Mukund | 6 | 4 | 2 | |||||||||||||||||||||
| G Oliveira | 7 | 78 | G Oliveira | 4 | 6 | 6 | |||||||||||||||||||||
| WC | R Harrison | 5 | 66 | G Oliveira | 1 | 7 | 2 | ||||||||||||||||||||
| Q |  D Kelly | 6 | 7 | WC | O Crawford | 6 | 5 | 0r | |||||||||||||||||||
| Alt | N Chappell | 1 | 5 | Q | D Kelly | 4 | 1 | ||||||||||||||||||||
| WC | Oliver Crawford | 7 | 6 | WC | O Crawford | 6 | 6 | ||||||||||||||||||||
| 9 | P Polansky | 5 | 2 | ||||||||||||||||||||||||
Steve Darcis was the defending champion, but lost in the first round to Andy Roddick, who went on to win the title by defeating Radek Štěpánek in the final, 7–5, 7–5.
Marcos Baghdatis was the defending champion, but chose to compete in ATP 500 in Washington instead.
Dudi Sela won the title, defeating Ričardas Berankis 7–5, 6–2 in the finals.
The men's singles of the 2012 CNGvitall Prague Open tournament was played on clay in Prague, Czech Republic.
Dudi Sela was the defending champion, but he lost in the quarterfinals to Grega Žemlja.
Grega Žemlja won the title defeating Karol Beck in the final 7–6(7–3), 4–6, 6–4.
Andy Murray defeated David Ferrer in the final, 2–6, 6–4, 7–6(7–1) to win the men's singles tennis title at the 2013 Miami Open. It was his second Miami Open title.
Tatsuma Ito was the defending champion, but lost to Dudi Sela in the quarterfinals.
Sela went on to win the title by defeating Alex Bogomolov Jr. 6–1, 6–4 in the final.
Uladzimir Ignatik was the defending champion, but lost to Radu Albot in the first round.
Dudi Sela won the title defeating Teymuraz Gabashvili in the final 6–1, 6–2.
Jarkko Nieminen was the defending champion, but he lost in the first round to Jürgen Zopp, who won the title, defeating Dudi Sela in the final, 6–4, 5–7, 7–6(8–6).
Ivo Karlović was the defending champion from when the tournament was last held in 2008, but chose not to participate.
Blaž Kavčič was the defending champion, but did not compete this year.
Teymuraz Gabashvili was the defending champion but chose not to participate.
Rajeev Ram was the defending champion, but lost in the second round to Dudi Sela.
Karen Khachanov was the defending champion but chose not to participate.
Paolo Lorenzi was the defending champion but chose not to defend his title.
Dudi Sela was the defending champion but lost in the first round to Hugo Grenier.
Marcel Granollers was the defending champion but chose not to defend his title.
Maverick Banes was the defending champion but lost in the first round to Shintaro Imai.
J. J. Wolf was the defending champion but lost in the second round to Nam Ji-sung.
Reilly Opelka was the defending champion, but lost to Jason Jung in the quarterfinals.
Peter Polansky was the defending champion but lost in the second round to Strong Kirchheimer.