Tommy Haas was the defending champion, but lost in quarterfinals to Vincent Spadea.
Novak Djokovic was the defending champion, but lost to Janko Tipsarević in the quarterfinals.
Roger Federer won his record-tying twentieth Masters 1000 title and third title at Madrid by defeating Tomáš Berdych 3–6, 7–5, 7–5 in the final. With this win, Federer overtook Rafael Nadal for the No. 2 ranking.
Philipp Kohlschreiber was the defending champion but lost to Tommy Haas in the semifinals.
Eventually, Haas won the title after defeating Roger Federer in the final by 7–6(7–5), 6–4.
Andy Murray was the defending champion, but lost in the third round to lucky loser Jérémy Chardy.
World No. 1 Roger Federer won his record fifth title at the Cincinnati Masters defeating 3-time runner-up and World No. 2 Novak Djokovic 6–0, 7–6 (9–7). Federer also set a new record by not having serve broken or losing a set for the first time in the history of any Masters 1000 tournament. He would repeat this accomplishment at the 2015 Cincinnati Masters.
The 2013 BNP Paribas Open – Men's Singles was the main event of the 2013 BNP Paribas Open men's tennis tournament played in Indian Wells, USA from March 7 through March 17, 2013.
Novak Djokovic was the defending champion, but lost in the fourth round to Tommy Haas. This championship was the first since the tournament's inception that no American was featured in the quarterfinals, with the last player from the US, Sam Querrey, beaten in the fourth round by Tomas Berdych. This meant that it was also the first all-European final eight at the Miami Masters.
Rafael Nadal was the eight-time defending champion, but was defeated in the final by Novak Djokovic 2–6, 6–7(1–7), bringing an end to Nadal's 46-match winning streak at the event. As a result, Djokovic became the first man ever to win singles titles at 8 of the 9 Masters 1000 series tournaments.
Philipp Kohlschreiber was the defending champion but lost in the final to Tommy Haas, 3–6, 6–7(3–7).
Template:Innline citations
Fabio Fognini was the defending champion, but lost to Filip Krajinović in the second round.
Leonardo Mayer won the title, defeating David Ferrer in the final, 6–7(3–7), 6–1, 7–6(7–4).
Rafael Nadal was the defending champion, but chose not to participate this year.
Roger Federer was the three-time defending champion, but lost in the semifinals to Alexander Zverev.
Novak Djokovic was the defending champion, but lost in the fourth round to Nick Kyrgios.
Federico Delbonis was the defending champion but retired in the first round against Reda El Amrani.
Philipp Kohlschreiber was the defending champion, but lost in the second round to Horacio Zeballos.
The 2018 French Open – Men's Singles Qualifying was a series of tennis matches which took place 21 May 2018 to 25 May 2018 to determine the sixteen qualifiers into the main draw of the 2018 French Open – Men's Singles. Eight competitors also qualified as lucky losers.
