My Top 5:
1. Fed, didn't burn much for WTF, cares a lot about his Slam record so will be fresh and motivated. Won back2back a year ago.
2. Djokovic, still his "home slam" plus can't be happy about WTF.
3. Tsitsipas, will be a gap but should feel confident and he is defending SF points from last year. Can beat anyone.
4. Dimitrov, has generally done well for his standards here and finished the year pretty good. Would need good draw till QF, should have beaten Tiafoe last year. Wildcard but still great at his peak.
5. Nadal. The YE #1 and has made 2 of last 3 finals. But hasn't had many 2 year runs at the AO and looked spent at WTF. May focus more on clay this year to secure tie with Roger's Slam haul.