| Singles | |
|---|---|
| 2018 Open de Rennes | |
| Champion |  Vasek Pospisil |
| Runner-up |  Ričardas Berankis |
| Final score | 6–1, 6–2 |
Uladzimir Ignatik was the defending champion but lost in the first round to Alexey Vatutin.
Vasek Pospisil won the title after defeating Ričardas Berankis 6–1, 6–2 in the final.
Mikhail Youzhny (second round) Vasek Pospisil (champion)
Gastão Elias (first round)
Sergiy Stakhovsky (first round)
Dustin Brown (first round)
Quentin Halys (quarterfinals) Ričardas Berankis (final)
Norbert Gombos (second round)| Semifinals | Final | ||||||||||||
| 7/Alt | Ričardas Berankis | 7 | 6 | ||||||||||
 Liam Broady | 5 | 1 | |||||||||||
| 7/Alt | Ričardas Berankis | 1 | 2 | ||||||||||
| 2 | Vasek Pospisil | 6 | 6 | ||||||||||
| Q | Antoine Hoang | 4 | 64 | ||||||||||
| 2 | Vasek Pospisil | 6 | 77 | ||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 1 | M Youzhny | 6 | 6 | ||||||||||||||||||||||||
| C Moutet | 1 | 2 | 1 | M Youzhny | 4 | 1 | |||||||||||||||||||||
| G Sakharov | 6 | 4 | 6 | G Sakharov | 6 | 6 | |||||||||||||||||||||
| WC | U Humbert | 3 | 6 | 3 | G Sakharov | 1 | 6 | 4 | |||||||||||||||||||
 S Bolelli | 6 | 77 | 7/Alt | R Berankis | 6 | 4 | 6 | ||||||||||||||||||||
 S Ofner | 2 | 61 | S Bolelli | 5 | 3 | ||||||||||||||||||||||
| M Bourgue | 3 | 4 | 7/Alt | R Berankis | 7 | 6 | |||||||||||||||||||||
| 7/Alt | R Berankis | 6 | 6 | 7/Alt | R Berankis | 7 | 6 | ||||||||||||||||||||
| 3 | G Elias | 1 | 4 | L Broady | 5 | 1 | |||||||||||||||||||||
| WC | M Guinard | 6 | 6 | WC | M Guinard | 3 | 6 | 6 | |||||||||||||||||||
| Q |  M Ymer | 77 | 5 | 2 | WC |  E Gulbis | 6 | 3 | 4 | ||||||||||||||||||
| WC | E Gulbis | 64 | 7 | 6 | WC | M Guinard | 4 | 4 | |||||||||||||||||||
| WC | M Janvier | 77 | 6 | L Broady | 6 | 6 | |||||||||||||||||||||
 T Robredo | 65 | 4 | WC | M Janvier | 4 | 1 | |||||||||||||||||||||
| L Broady | 6 | 4 | 7 | L Broady | 6 | 6 | |||||||||||||||||||||
| 5 | D Brown | 3 | 6 | 5 | |||||||||||||||||||||||
| First round | Second round | Quarterfinals | Semifinals | ||||||||||||||||||||||||
| 8 | N Gombos | 6 | 6 | ||||||||||||||||||||||||
| K de Schepper | 2 | 3 | 8 | N Gombos | 2 | 6 | 3 | ||||||||||||||||||||
 A De Greef | 67 | 6 | 3 | Q | A Hoang | 6 | 4 | 6 | |||||||||||||||||||
| Q | A Hoang | 79 | 3 | 6 | Q | A Hoang | 6 | 3 | 6 | ||||||||||||||||||
 N Milojević | 77 | 2 | 4 | Y Maden | 3 | 6 | 2 | ||||||||||||||||||||
| Y Maden | 65 | 6 | 6 | Y Maden | 6 | 6 | |||||||||||||||||||||
| E Ymer | 6 | 3 | 6 | E Ymer | 4 | 4 | |||||||||||||||||||||
| 4 | S Stakhovsky | 1 | 6 | 3 | Q | A Hoang | 4 | 64 | |||||||||||||||||||
| 6 | Q Halys | 6 | 77 | 2 | V Pospisil | 6 | 77 | ||||||||||||||||||||
| Q | T Lamasine | 1 | 65 | 6 | Q Halys | 4 | 6 | 710 | |||||||||||||||||||
| A Vatutin | 6 | 6 | A Vatutin | 6 | 4 | 68 | |||||||||||||||||||||
 U Ignatik | 1 | 4 | 6 | Q Halys | 1 | 4 | |||||||||||||||||||||
| SE | M Moraing | 65 | 6 | 6 | 2 | V Pospisil | 6 | 6 | |||||||||||||||||||
| C Hemery | 77 | 1 | 4 | SE | M Moraing | 64 | 60 | ||||||||||||||||||||
| Q |  Y Uchiyama | 3 | 4 | 2 | V Pospisil | 77 | 77 | ||||||||||||||||||||
| 2 | V Pospisil | 6 | 6 | ||||||||||||||||||||||||
The men’s qualifying singles event began on 23 August in New York and was completed over four days through to and including the 26 August.
This article displays the qualifying for the Singles tournament.
Andreas Seppi was the defending champion, but lost in the final to Andy Roddick, 6–3, 6–2.
Ernests Gulbis was the defending champion, but chose not to participate.
Kevin Anderson was the defending champion, but lost to John Isner in the quarterfinals.
Rafael Nadal defeated Juan Martín del Potro in the final, 4–6, 6–3, 6–4 to win the men's singles title at the 2013 Indian Wells Masters. It was Nadal's third singles title at Indian Wells, his record 22nd ATP Masters 1000 title, and his 53rd title overall.
Jo-Wilfried Tsonga was the defending champion, but lost in the final to Ernests Gulbis 6–7(5–7), 4–6.
Lukáš Rosol was the defending champion, but lost in the final to Grigor Dimitrov 7–6(7–2), 6–1
Richard Gasquet was the defending champion, but withdrew before the tournament began.
Marin Čilić won the title, defeating Roberto Bautista Agut in the final, 6–4, 6–4.
Bob Bryan and Mike Bryan were the two-time defending champions, but lost in the quarterfinals to Vasek Pospisil and Jack Sock.
Pospisil and Sock went on to win the title, defeating Simone Bolelli and Fabio Fognini in the final, 6–4, 6–7(3–7), [10–7].
Bob Bryan and Mike Bryan were the defending champions and successfully defended their title, defeating Vasek Pospisil and Jack Sock in the final, 6–3, 1–6, [10–8].
Andy Murray defeated the two-time defending champion Rafael Nadal in the final, 6–3, 6–2, to win the men's singles title at the 2015 Madrid Open.
Roger Federer was the two-time defending champion and successfully defended his title, defeating Andreas Seppi in the final, 7–6(7–1), 6–4.
Denis Istomin was the defending champion, but lost in the first round to Damir Džumhur.
Roger Federer, the seven time winner and defending champion, did not participate due to injury. It would be the first time since 2005 that he would not play in the final. Federer had played in ten consecutive finals from 2006–2015.
Florian Mayer was the defending champion, but lost to Roger Federer in the quarterfinals.
Juan Martín del Potro defeated the defending champion Roger Federer in the final, 6–4, 6–7(8–10), 7–6(7–2), to win the men's singles title at the 2018 Indian Wells Masters. Del Potro saved three championship points en route to his first ATP Tour Masters 1000 title, having been a runner-up on three previous occasions.
Damir Džumhur was the defending champion, but lost to Egor Gerasimov in the first round.
Vasek Pospisil was the defending champion but chose not to defend his title.
Andrey Rublev was the reigning champion from when the tournament was last held in 2019, but lost to Adrian Mannarino in the second round in a rematch of the 2019 final.