#3. Roger Federer (2017 Australian Open)- 35 years and 171 days
Federer did not have a very memorable 2016 ATP World Tour as most of it was hampered by injuries which prevented the 17-time Grand Slam champion from performing at his very best. After his Wimbledon semi-final defeat to Milos Raonic, Federer opted to pull out of the remainder of the season to recover from his injuries. As a result, his ranking dropped from 3rd to 16th.Federer returned to action during the Hopman Cup this year where he had a decent showing but could not help Switzerland to the final as they ended second in their group. In the Australian Open, Federer was seeded 17th and did not have a very good start to the tournament as it took him four sets to win his first round match against former Roland Garros semi-finalist and Top 10 player Jurgen Melzer. This was followed by two successive straight set wins over Noah Rubin and Tomas Berdych before overcoming 5th seed Kei Nishikori in a tight five-setter.In the quarter-finals, Federer beat Mischa Zverev in straight sets before overcoming Stan Wawrinka in an epic five-set semi-final to reach his 27th Grand Slam final and his first in the Australian Open since 2010. Not only did he reach the final, he won it by defeating his arch nemesis Rafael Nadal in an epic five setter 6-4, 3-6, 6-1, 3-6, 6-3. This win gave Roger Federer his 18th major title and 5th Australian Open.
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