Rafa and Novak have signed up to play in Kooyong classic. It is not clear whether they backed out of TB10 or they will play both.
Kooyong classic involves regular 3 set matches. Unlike regular tourneys it has a different format, where every player is guaranteed
three matches. It is not RR either. They usually start with 8 players and the winners progress playing other winners and losers
play other losers.
This will certainly be a good practice for both Rafa and Novak before AO (assuming they actually play finally).
It is from Jan 9 through 12. Also, it is bound to be interesting, as several other contenders (Cilic, Thiem, Goffin(?) and Anderson) are also playing in it. Tomic and Gasquet are also in it.