Dantyiil Medvedev claimed two wins as Russia defeated Australia to top Group B ©Get Images

Defending champions Russia silenced the home crowd with a clinical performance to beat Australia at the Association of Tennis Professionals (ATP) Cup in Sydney.

US Open champion Daniil Medvedev combined with world number 167 Roman Safiullin to secure a comfortable 3-0 victory in Group B.

Medvedev suffered a shock defeat to Ugo Humbert in Russia’s win over France, but the world number two ensured there was to be no mistake on this occasion as he dismissed Alex de Minaur 6-4, 6-2.

Safiullin, who was called up by Russia after Andrey Rublev and Aslan Karatsev both tested positive for coronavirus, seized his opportunity again as he backed up his two wins against France with another gutsy triumph versus the Australians.

He defeated James Duckworth 7-6, 6-4 before successfully teaming up with Medvedev in the doubles as they downed John Peers and Luke Saville 7-6, 3-6, 10-6.

"We fight when we play for our country, to the last point," said Medvedev.

"I didn’t feel great prior to the match, so I took some painkillers before I came out.

"I’m really happy for Roman, he’s winning every match he’s played so far."

Italy bounced back from their defeat to Australia with a comprehensive 3-0 win over France in Group B.

Matteo Berrettini saw off Humbert 6-4, 7-6 before Jannik Sinner emerged a 6-3, 7-6 victor against Arthur Rinderknech.

The Italians then returned to the court in their first doubles match together and defeated veterans Fabrice Martin and Edouard Roger-Vasselin 6-3, 6-7, 10-8.

Felix Auger-Aliassime delivered two victories for Canada as they edged Britain 2-1 in Group C.

Dan Evans gave Britain the perfect start when he overcame Denis Shapovalov 6-4, 6-4.

Auger-Aliassime then came to the rescue for Canada as he defeated Cameron Norrie 7-6, 6-3 before combining with Shapovalov to beat Jamie Murray and Joe Salisbury 6-4, 6-1.

Olympic champion Alexander Zverev produced another commanding performance to clinch Germany’s victory over the United States in Group C.

Zverev proved too strong for Taylor Fritz as he claimed a 6-4, 6-4 success.

Jan-Lennard Struff put Germany in front when he battled hard to beat big-serving John Isner 7-6, 4-6, 7-5.

Fritz and Isner lost just three games in a 6-0, 6-3 thrashing of Kevin Krawietz and Tim Pütz but it was a mere consolation in a 2-1 defeat.

ATP Cup action continues tomorrow with Norway meeting Chile and Serbia facing Spain in Group A and Poland tackling Argentina and Greece taking on Georgia in Group D.