Defending champion Roger Federer defeated Novak Djokovic in the final, 7–6(7–1), 6–3 to win the men's singles tennis title at the 2015 Cincinnati Masters. It was his seventh Cincinnati Masters title on his seventh final appearance, making him the second man to go undefeated in seven finals at the same Masters 1000 event (after Rafael Nadal at the Monte-Carlo Masters). For the second time in his career (after 2012), Federer did not lose a set or have his serve broken during the tournament. It marked the first time Federer defeated the world No. 1 and No. 2 players in consecutive matches en route to a title. It was Djokovic's fifth runner-up finish without winning the title; he would eventually do so in 2018.
Seeds The top eight seeds receive a bye into the second round.
Novak Djokovic (final) Roger Federer (champion) Andy Murray (semifinals) Kei Nishikori (withdrew because of fatigue) Stan Wawrinka (quarterfinals) Tomáš Berdych (quarterfinals) Marin Čilić (third round) Rafael Nadal (third round) Milos Raonic (first round) Gilles Simon (first round) John Isner (first round) Richard Gasquet (quarterfinals) David Goffin (third round) Gaël Monfils (first round) Kevin Anderson (third round) Grigor Dimitrov (third round)
Draw
Finals
Top half
Section 1
Section 2
Bottom half
Section 3
Section 4
Qualifying
Seeds
Qualifiers
Lucky loser Benoît Paire
Qualifying draw
First qualifier
Second qualifier
Third qualifier
Fourth qualifier
Fifth qualifier
Sixth qualifier
Seventh qualifier
References
Main Draw Qualifying Draw