FACTBOX-Tennis-Roger Federer v Stefanos Tsitsipas

A look at the records of Switzerland's Roger Federer and Greek Stefanos Tsitsipas before their fourth-round match at the Australian Open on Sunday (prefix number denotes seeding): 3-ROGER FEDERER

Age: 37 ATP Ranking: 3 (Highest ranking: 1)

Grand Slam titles: 20 (Australian Open 2004, 2006, 2007, 2010, 2017, 2018; French Open 2009; Wimbledon 2003, 2004, 2005, 2006, 2007, 2009, 2012, 2017; U.S. Open 2004, 2005, 2006, 2007, 2008) 2018 Australian Open performance: Winner

Best Australian Open performance: Winner (2004, 2006, 2007, 2010, 2017, 2018) 2019 Australian Open results:

First round: beat Denis Istomin (Uzbekistan) 6-3 6-4 6-4 Second round: beat Dan Evans (Britain) 7-6(5) 7-6(3) 6-3

Third round: beat Taylor Fritz (U.S.) 6-2 7-5 6-2 Federer is looking to win a record seventh Australian Open title and the 37-year-old is also on a quest to win his 100th singles title.

His service rhythm this week has allowed him to dominate games and conserve energy for the latter stages, having spent just six hours to win his first three matches. 14-STEFANOS TSITSIPAS

Age: 20 ATP Ranking: 15

Grand Slam titles: 0 2018 Australian Open performance: First round

Best Australian Open performance: Third round (2019) 2019 Australian Open results:

First round: beat Matteo Berrettini (Italy) 6-7(3) 6-4 6-3 7-6(4) Second round: beat Viktor Troicki (Serbia) 6-3 2-6 6-2 7-5

Third round: beat Nikoloz Basilashvili (Georgia) 6-3 3-6 7-6(7) 6-4 Tsitsipas enjoyed a breakthrough 2018 season as he lifted the Next Gen Finals title to finish with a career-high ranking of 15.

The Greek youngster, who has reached the fourth round of a Grand Slam twice in his last three appearances, could trouble Federer with his knack of producing winners from tight angles. (Reporting by Hardik Vyas in Bengaluru; Editing by Ken Ferris)

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