in the first set due to a knee injury. He then beat qualifier Dustin Brown, who had just beaten Lleyton Hewitt to reach the fourth round. He pushed veteran Łukasz Kubot to five sets in his fourth-round match, but ultimately lost, setting up an all-Polish quarterfinal between Kubot and up-and-coming player Jerzy Janowicz. At the 2015 Miami Open, Mannarino was the 28th seed and thus received a bye into the second round where he defeated Albert Ramos Viñolas. He beat 7th seed and the 2014 Australian Open singles champion Stanislas Wawrinka in the third round but lost to unseeded Dominic Thiem in three sets in the fourth round. Mannarino reached his first career Masters 1000 doubles quarterfinal at the 2015 Mutua Madrid Open. He and his partner Juan Sebastián Cabal were defeated in the quarterfinals by the Indian-Romanian pair and eventual champions Rohan Bopanna and Florin Mergea. At the 2016 Australian Open, the unseeded pair of Mannarino and Lucas Pouille defeated three seeded pairs (including the top-seeded pair of Horia Tecău and Jean-Julien Rojer in the quarterfinals) to reach the semifinals, where they lost to Jamie Murray and Bruno Soares. That was Mannarino's first career Grand Slam doubles semifinal appearance. 2017: First Masters 1000 quarterfinal & ATP 500 singles final The unseeded Mannarino reached his third career ATP World Tour singles final at the 2017 Antalya Open; he defeated two seeded players Borna Ćorić (in the first round) and Fernando Verdasco (in the quarterfinals) to advance to the final, where he lost to Yūichi Sugita in straight sets. At the Wimbledon Championships one week later, Mannarino upset no. 19 seed Feliciano López in the first round and no. 15 seed Gaël Monfils in the third round before losing to no. 2 seed Novak Djokovic in the fourth round. He reached his first career ATP World Tour Masters 1000 singles quarterfinal at the 2017 Rogers Cup, where he upset no. 6 seed and world no. 10 Milos Raonic in the second round before losing to Denis Shapovalov in the quarterfinals. The unseeded Mannarino defeated top seed and world no. 5 Marin Čilić (the biggest singles win of his career and his first career win over a member of the Top 5 in the ATP singles rankings) in the semifinals of the Japan Open to reach his first career ATP World Tour 500 Series singles final, where he lost to fourth-seeded David