Andy Murray defeated Juan Martín del Potro in the final, 6–7(4–7), 7–6(7–3), 6–1, to win the Singles title at the 2009 Canadian Open.
Tomáš Berdych was the defending champion, but he lost in the quarterfinals to Mikhail Youzhny.
Radek Štěpánek was the defending champion; however, he lost to Xavier Malisse in the first round.
Fernando Verdasco won in the final 3–6, 6–4, 6–4 against Andy Roddick.
Juan Martín del Potro was the defending champion, but didn't participate due to a wrist injury.
David Nalbandian, ranked 117th, defeated Marcos Baghdatis 6–2, 7–6(7–4) in the final.
The 2011 Cincinnati Open was a tennis tournament played on outdoor hard courts at the Lindner Family Tennis Center in Mason, Ohio, United States. The tournament was a joint men's and women's event, with six new courts being built for the tournament. The competition took place from August 15 through August 21, 2011. The 110th edition of the Cincinnati Open, it was a Masters 1000 event on the 2011 ATP World Tour, and part of the Premier Series of the 2011 WTA Tour.
Mardy Fish was the defending champion, but had to retire in his second round match against Gilles Müller.
Andy Murray was the two-time defending champion, but lost in the final to Novak Djokovic, 5–7, 7–6(13–11), 6–3, bringing to an end Murray's perfect 12–0 record at the event. The final was voted as the best 2012 ATP World Tour match of the year, and Djokovic had to save 5 championship points in the second set in order to take the match into a decisive set.
Jürgen Melzer was the defending champion, but lost in the first round to Igor Sijsling.
Kei Nishikori won the title, defeating Feliciano López in the final, 6–2, 6–3.
Kevin Anderson was the defending champion, but lost to John Isner in the quarterfinals.
Rafael Nadal defeated Milos Raonic in the final 6–2, 6–2, to win the Men's Singles title at the 2013 Canadian Open.
The 2014 Sony Open Tennis – Men's Singles was the main men's event of the 2014 Sony Open Tennis tennis tournament played in Key Biscane, USA from March 17 through March 30, 2014.
Andy Murray was the defending champion, but lost in the third round to Radek Štěpánek.
João Sousa was the defending champion, but lost to Benjamin Becker in the first round.
Kei Nishikori won the title, defeating Julien Benneteau in the final, 7–6(7–4), 6–4.
Juan Martín del Potro was the defending champion, but was unable to participate this year due to a wrist injury.
Defending champion Kei Nishikori successfully defended his title, defeating Pablo Andújar in the final, 6–4, 6–4, to win the Singles title at the 2015 Barcelona Open.
Roger Federer was the defending champion, but lost in the final to Milos Raonic, 4–6, 4–6.
Rafael Nadal defeated the two-time defending champion Kei Nishikori in the final, 6–4, 7–5 to win the Singles title at the 2016 Barcelona Open. It was Nadal's record-extending ninth title at the Barcelona Open and his 49th clay court title, equaling Guillermo Vilas' record for the most titles on clay.
Roger Federer was the three-time defending champion, but lost in the semifinals to Alexander Zverev.
Novak Djokovic defeated Kei Nishikori in the final, 6–3, 7–5, to win the Men's Singles title at the 2016 Rogers Cup. It was his record 30th ATP Masters 1000 title and his record 43rd Masters 1000 final.
Stan Wawrinka was the defending champion, but withdrew before the tournament began.
Radek Štěpánek (Qualified)
Pablo Andújar (First Round)
Kei Nishikori (Qualified)
Jarkko Nieminen (First Round)
Adrian Mannarino (Qualifying Competition)
Ernests Gulbis (Qualified)
Alex Bogomolov, Jr. (Qualified)
Mikhail Kukushkin (Qualifying Competition)
Somdev Devvarman (First Round)
Bernard Tomic (First Round)
Andreas Haider-Maurer (First Round)
Olivier Rochus (First Round)
