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2014: Davis Cup glory

At the Australian Open, Federer defeated Tsonga and Murray to reach his 11th consecutive semifinal in Melbourne, before losing to Rafael Nadal in straight sets. At the Dubai Championships, he defeated Djokovic in the semifinals and Berdych in the final to win his sixth Dubai crown. Federer then reached the Indian Wells final, but lost to Djokovic in a final-set tiebreaker. The emergence of countryman Stanislas Wawrinka as a Grand Slam singles champion in 2014 renewed hope for Federer in his Davis Cup quest, and the pair both committed to playing each tie in the Davis Cup. Their commitment paid off as wins over Serbia, Kazakhstan (in which Federer won the first deciding rubber of his Davis Cup career), and Italy allowed the Swiss team to advance to the final for the first time since 1992.

During the clay season, Federer took a wild card into the Monte-Carlo Masters, defeating Djokovic on his way to the final, which he lost to Wawrinka. At the Halle Open, Federer reached both the singles and the doubles finals, beating Alejandro Falla in the singles final. At Wimbledon, Federer reached a record ninth final, but he was defeated by Djokovic in an epic five-set match.

Federer reached the final of the Canadian Open, where he was defeated by Tsonga. Federer then defeated Spain's David Ferrer in three sets to capture his sixth Cincinnati crown. He then reached the semifinals at the US Open but lost in straight sets to eventual champion Marin Čilić.

At Shanghai Masters, Federer saved five match points against Leonardo Mayer in the second round before defeating Djokovic in the semifinals to end his 28-match unbeaten run on Chinese soil. He then beat Gilles Simon to win his second Shanghai final. The victory saw Federer return to the No. 2 ranking for the first time since May 2013. Federer then won the Swiss Indoors for a record sixth title, defeating David Goffin in the final. Federer also reached the finals of the 2014 ATP Finals to face Djokovic again, but withdrew from the final because of another back injury.

Despite his injury, Federer finished the season on a high by defeating Richard Gasquet to clinch the Davis Cup for Switzerland for the first time in its history. The final was held at the Stade Pierre-Mauroy in Lille, France, attracting over 27,000 spectators per match; this broke attendance record for the highest ever officially sanctioned competition tennis match.