Federer: Age - 36; World ranking - 2; Prize money - $111,885,682; Career titles - 95; Grand Slam titles - 19; Australian Open best - Winner (2004, 2006, 2007, 2010, 2017)
Federer is aiming to add to his five Australian Open titles and in the process win a record 20th Grand Slam. It will be his seventh decider at Melbourne Park, a feat no one else has achieved. The Swiss great began his year at the Hopman Cup and won all four of his singles matches, putting him on a 10-match unbeaten streak. He will be the third oldest man to contest the Melbourne Park final and has extended his record for most Grand Slam final appearances to 30. Rafael Nadal is next on 23.
Cilic: Age - 29; World ranking - 6; Prize money - $20,944,791; Career titles - 17; Grand Slam titles - 1; Australian Open best - Final (2018)
The towering Croat, one of the tallest men on tour at 6 feet 6 inches, won his first major title at the 2014 US Open, defeating Kei Nishikori in the final. He is at a career-high in the rankings and by beating Kyle Edmund in the semis will rise to number three in the world. Nicknamed "Chila", he made the final at Wimbledon last year, losing to Roger Federer, and won an event in Istanbul to go with five semi-final appearances. Warmed up for the Australian Open by making the semi-finals in Pune. Previous best at Melbourne Park was the last four in 2010.