Passage: Rafael Nadal holds the record for the most singles titles with 32 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 38 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 a 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).

Question: Based on this passage, who has the most atp masters 1000 titles?
Steam of consciousness below:
The relevant information is: Rafael Nadal holds the record for the most singles titles with 32 since the Masters series began in 1990.
So, the answer is Rafael Nadal.