Quarter-finals

The All Blacks Sevens edged Argentina 14-10 in their opening group game, before beating Scotland 19-7 and crushing Wales 43-5 on day one of the event.

In their pool match, Samoa led 10-7 at half-time versus Australia, who were third in the overall standings heading into Singapore, but the latter fought back to come out on top 26-17. The tries for the victors came from Matthew Gonzalez, Josh Turner, Corey Toole and Timothy Clements.

Djokovic continued his imperious progress through the men's draw, negotiating a potentially tricky encounter with Diego Schwartzman 6-3 6-4 6-4 to reach the last eight at Melbourne Park for the 11th time.

The seven-times champion only added to a strong feeling around the tournament that the Serbian is again the man to beat at the year's first Grand Slam as he ousted the Argentine in just over two hours at Rod Laver Arena.

Federer, chasing a record-extending 21st Grand Slam, came from behind to beat Hungarian Marton Fucsovics 4-6 6-1 6-2 6-2.