<prompt> Bhala ukuqhubeka kwalesi sigaba - Isikhathi sikaRoger Federer sika-2018 sethenisi saqala ngokusemthethweni ngoDisemba 30, 2017, ngokuqala kweHopman Cup  <response>: , futhi yaphela ngomhlaka 17 Novemba 2018, ngokulahlekelwa kuma-semifinals we-ATP Finals. Uqede unyaka ebekwe endaweni yesithathu ku-ATP Rankings. Le sizini ibone uFederer ethuthukisa ukuqala komsebenzi wakhe ngesizini eyi-17 0 21 0 uma kufaka phakathi ukunqoba kwiHopman Cup. UFederer unqobe i-major yakhe engamashumi amabili e-Australian Open futhi wandisa irekhodi lakhe lamasonto e-World No. 1 laya kumaviki angama-310 kule sizini. 