Tennis Master Series

The ATP World Tour Masters 1000 (previously known as the ATP Championship Series, Single-Week, ATP Mercedes-Benz Super 9, Tennis Masters Series, and ATP Masters Series) is the third highest tier of annual men's tennis tournament after the four Grand Slam tournaments and the ATP Finals.

Results in ATP Masters 1000 events earn players more world ranking points than regular tournaments, though not as many as Grand Slam events or the year-end ATP Finals. Up until 2007, most Masters Series finals were contested as best of five-set matches. Currently, all Masters Series matches (including the finals) are decided in best of three-set matches.

Rafael Nadal holds the record for the most singles titles with 31 since the Masters series began in 1990. Nadal and Djokovic together held all 9 Masters 1000 crowns starting with the 2013 Monte Carlo title through the 2014 Miami title, which was the first time that 2 players possessed all nine of the titles. The Bryan Brothers have won a record 37 doubles titles, all as a team. No player has ever won all 9 singles titles in his career, with Novak Djokovic winning 8, and Rafael Nadal, Andre Agassi, Roger Federer and Andy Murray each winning 7. In doubles, however, Daniel Nestor and the Bryan Brothers (Bob and Mike) have each won all 9 titles throughout their careers. Djokovic holds the record for 6 singles titles in a year (2015). Additionally, Djokovic and Nadal are the only two players to win four singles titles in row and Nadal is the only person to complete the feat in the same calendar year when he won Madrid, Rome, Canada, and Cincinnati in 2013. In doubles, the Bryans have won 6 titles in a single year once (2014) and 5 titles in a single year twice (2007 and 2013).

Currently, the following 9 tournaments are part of the series: Canadian Open (Montreal, Toronto), Cincinnati Masters, Indian Wells Masters, Italian Open (Rome), Madrid Open, Miami Open, Monte-Carlo Masters, Paris Masters, Shanghai Masters.

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