Slam quarter-final. He played the Shanghai Masters and was upset in the second round by Viktor Troicki. He subsequently ended his 2016 season to let his wrist recover. 2017: La Decima, US Open win, and year-end No. 1 Nadal opened his season by playing at the Brisbane International for the first time, where he reached the quarterfinals before losing to Milos Raonic in three sets. In the second round of the tournament, he defeated Mischa Zverev for the loss of just two games; Nadal began the Australian Open with straight-set wins over Florian Mayer and Marcos Baghdatis, before more difficult wins over Alexander Zverev and Gael Monfils, which set up his first quarterfinal berth at a Grand Slam since the 2015 French Open. Nadal defeated Raonic and Grigor Dimitrov in the quarterfinal and semifinal, respectively (the latter lasting for five sets over five hours), to set up a final against Roger Federer, his first Grand Slam final since he won the 2014 French Open. Nadal went on to lose to Federer in five sets; this was the first time that Nadal had lost to Federer in a Grand Slam since the final of the 2007 Wimbledon Championships. Nadal made it to the final of Acapulco without dropping a set, but was defeated by big-serving Sam Querrey. In a rematch of the Australian Open final Nadal took on Roger Federer in the fourth round at Indian Wells but again lost to his old rival, this time in straight sets; it was their earliest meeting in a tournament in over a decade. In the Miami Masters, Nadal reached the final to again play Federer, and was once again defeated in straight sets. Nadal then won his 29th Masters title in Monte Carlo; it was his tenth victory in the principality, the most wins by any player at a single tournament in the Open era. Nadal won his 18th ATP 500 title in Barcelona without dropping a set, also marking his tenth victory in Barcelona. Nadal next played in the Madrid Open, where he defeated Dominic Thiem to tie Novak Djokovic's all-time Masters record of 30 titles. Nadal went on to beat Stan Wawrinka in straight sets and win a record tenth French Open title. This marked his first Grand Slam title since 2014, ending his three-year drought in Grand Slams. Nadal won every set that he played in the tournament, dropping a