Rafael Nadal returns from a "winding, tortuous" injury journey in Brisbane this week, while fellow superstar Novak Djokovic kickstarts his bid for an unprecedented 11th Australian Open title at Perth. Meanwhile, Naomi Osaka is set to play her first competitive match since September 2022.
Liverpool climbed to the top of the Premier League as Darwin Nunez ended his goal drought to inspire a 2-0 win against Burnley, while Rasmus Hojlund broke his own barren run to cap Manchester United's thrilling fightback to beat Aston Villa 3-2 on Tuesday.
Japan's Naoya Inoue said he was still as hungry as ever after becoming an undisputed world champion in a second weight class on Tuesday, knocking out Marlon Tapales to claim all four super bantamweight belts.
Baltimore quarterback Lamar Jackson has overtaken San Francisco's Brock Purdy in the MVP race after leading the Ravens to a dominant 33-19 road win against the 49ers on Christmas Day.