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| Singles | |
|---|---|
| 2018 KPIT MSLTA Challenger | |
| Champion |  Elias Ymer |
| Runner-up |  Prajnesh Gunneswaran |
| Score | 6–2, 7–5 |
Yuki Bhambri was the defending champion but chose not to defend his title.
Elias Ymer won the title after defeating Prajnesh Gunneswaran 6–2, 7–5 in the final.
Radu Albot (semifinals) Ramkumar Ramanathan (first round) Elias Ymer (champion) Prajnesh Gunneswaran (final)
Marc Polmans (first round)
Jay Clarke (second round, retired)
Andrej Martin (first round) James Ward (first round)| Semifinals | Final | ||||||||||||
| 1 | Radu Albot | 6 | 4 | 4 | |||||||||
| 4 | Prajnesh Gunneswaran | 1 | 6 | 6 | |||||||||
| 4 | Prajnesh Gunneswaran | 2 | 5 | ||||||||||
| 3 | Elias Ymer | 6 | 7 | ||||||||||
| 3 | Elias Ymer | 6 | 3 | 6 | |||||||||
 Brayden Schnur | 3 | 6 | 3 | ||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | R Albot | 7 | 6 | ||||||||||||||||||||||||
| S Nagal | 5 | 2 | 1 | R Albot | 6 | 6 | |||||||||||||||||||||
| M Banes | 3 | 6 | 6 | M Banes | 3 | 1 | |||||||||||||||||||||
| Q |  Francesco Vilardo | 6 | 4 | 1 | 1 | R Albot | 6 | 4 | 6 | ||||||||||||||||||
| WC | S Mukund | 6 | 77 | WC | S Mukund | 3 | 6 | 1 | |||||||||||||||||||
| SE | S Myneni | 4 | 61 | WC | S Mukund | 5 | 6 | 4 | |||||||||||||||||||
 C İlkel | 3 | 77 | 2 | 6 | J Clarke | 7 | 4 | 1r | |||||||||||||||||||
| 6 | J Clarke | 6 | 63 | 6 | 1 | R Albot | 6 | 4 | 4 | ||||||||||||||||||
| 4 | P Gunneswaran | 6 | 6 | 4 | P Gunneswaran | 1 | 6 | 6 | |||||||||||||||||||
 T-h Yang | 4 | 4 | 4 | P Gunneswaran | 6 | 6 | |||||||||||||||||||||
 C Altamirano | 3 | 1 | Q |  L Gerch | 1 | 3 | |||||||||||||||||||||
| Q | Lucas Gerch | 6 | 6 | 4 | P Gunneswaran | 6 | 6 | ||||||||||||||||||||
 D Petrović | 7 | 4 | 4 |  A Nedovyesov | 4 | 4 | |||||||||||||||||||||
| Q |  B Patael | 5 | 6 | 6 | Q | B Patael | 5 | 4 | |||||||||||||||||||
| A Nedovyesov | 6 | 6 | A Nedovyesov | 7 | 6 | ||||||||||||||||||||||
| 5 | M Polmans | 2 | 4 | ||||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 8 | J Ward | 4 | 4 | ||||||||||||||||||||||||
| M Purcell | 6 | 6 | M Purcell | 2 | 1 | ||||||||||||||||||||||
 S Griekspoor | 6 | 3 | 4 | Q | S Fanselow | 6 | 6 | ||||||||||||||||||||
| Q | S Fanselow | 3 | 6 | 6 | Q | S Fanselow | 7 | 3 | 4 | ||||||||||||||||||
| D Masur | 6 | 6 | 3 | E Ymer | 5 | 6 | 6 | ||||||||||||||||||||
| J Sels | 4 | 4 | D Masur | 3 | 64 | ||||||||||||||||||||||
| WC | Manish Sureshkumar | 4 | 1 | 3 | E Ymer | 6 | 77 | ||||||||||||||||||||
| 3 | E Ymer | 6 | 6 | 3 | E Ymer | 6 | 3 | 6 | |||||||||||||||||||
| 7 | A Martin | 2 | 3 | B Schnur | 3 | 6 | 3 | ||||||||||||||||||||
| Alt |  N Kuhn | 6 | 6 | Alt | N Kuhn | 5 | 5 | ||||||||||||||||||||
| LL | B Hassan | 1 | 2 |  F Ferreira Silva | 7 | 7 | |||||||||||||||||||||
| F Ferreira Silva | 6 | 6 | F Ferreira Silva | 66 | 6 | 5 | |||||||||||||||||||||
| B Schnur | 6 | 6 | B Schnur | 78 | 2 | 7 | |||||||||||||||||||||
| WC | Aryan Goveas | 3 | 4 | B Schnur | 7 | 6 | |||||||||||||||||||||
| WC | A Kadhe | 6 | 6 | WC | A Kadhe | 5 | 2 | ||||||||||||||||||||
| 2 | R Ramanathan | 3 | 2 | ||||||||||||||||||||||||
Yuki Bhambri was the defending champion but chose not to defend his title.
Lucas Pouille was the defending champion, but lost in the semifinals to Milos Raonic.
John Isner was the defending champion, but withdrew before the tournament began.
Sam Querrey was the defending champion, but lost in the second round to Egor Gerasimov.
Denis Istomin was the defending champion, but chose not to participate this year.
Mikhail Youzhny was the defending champion but retired from professional tennis earlier in the year.
Sumit Nagal was the defending champion but lost in the quarterfinals to Saketh Myneni.
Jordan Thompson was the defending champion but chose not to defend his title.
Dominic Thiem defeated Roger Federer in the final, 3–6, 6–3, 7–5 to win the men's singles tennis title at the 2019 Indian Wells Masters. It was his maiden ATP Tour Masters 1000 title, and he became the first Austrian to win a Masters title since Thomas Muster won the 1997 Miami Open.
Roger Federer defeated the defending champion John Isner in the final, 6–1, 6–4 to win the men's singles tennis title at the 2019 Miami Open. It was Federer's fourth Miami Open title, his 28th and final Masters singles title, and his 101st career singles title overall.
Prajnesh Gunneswaran was the defending champion but lost in the final to Jay Clarke.
Roger Federer was the defending champion, but chose not to participate this year.
Elias Ymer was the defending champion but chose not to defend his title.
Andreas Seppi was the defending champion but chose not to defend his title.
Marcos Giron was the defending champion but chose not to defend his title.
Emilio Gómez was the defending champion but chose not to defend his title.
Denis Kudla was the defending champion but chose not to defend his title.
Jannik Sinner defeated Mackenzie McDonald in the final, 7–5, 4–6, 7–5 to win the singles tennis title at the 2021 Citi Open. With the victory, Sinner became the youngest player and first teenager on the ATP Tour to win an ATP 500 title since the category was created in 2009.
This was the first edition of the tournament.
Adrian Mannarino was the defending champion but chose not to defend his title.