Andrey Rublev finishes his 4-0 run at the ATP Cup on Sunday with a straight-sets victory against Italian Fabio Fognini.

Andrey Rublev loses only seven service points to beat Fabio Fognini in the ATP Cup final, giving Russia a 1-0 lead against Italy.

Diego Schwartzman claims his second win in five ATP Head2Head encounters against Kei Nishikori on Saturday at the ATP Cup.

Guido Pella owns a 2-0 ATP Head2Head record against Yoshihito Nishioka.

Russia's Andrey Rublev celebrates beating Jan-Lennard Struff of Germany on Saturday in the ATP Cup semi-finals.

Team Italy celebrates its victory against Team Spain, sending them into the ATP Cup final for the first time.

Matteo Berrettini clinches Italy's victory against Spain in the ATP Cup semi-finals by defeating Roberto Bautista Agut in straight sets.

Fabio Fognini broke Pablo Carreno Busta's serve five times en route to his first ATP Head2Head victory against the Spaniard.

Fabio Fognini earns his first ATP Head2Head victory against Pablo Carreno Busta (1-7) to give Italy a 1-0 lead against Spain in the ATP Cup semi-finals.

Nicolas Mahut (right) and Edouard Roger-Vasselin (left) finish this year's ATP Cup with a 2-0 team record.

Team Germany celebrates clinching the decisive doubles rubber on Friday to edge defending champion Serbia at the ATP Cup.

Nicolas Mahut owns a 2-0 record at this year's ATP Cup.

John Peers and Luke Saville power through the Match Tie-break for Australia's first tie win on Wednesday against Greece.

Serbia will face Germany for a place in the ATP Cup semi-finals.

Stefanos Tsitsipas saves two set points against Alex de Minaur on Tuesday to send the Greece-Australia tie to a deciding doubles rubber.

John Millman hands Australia an early advantage against Greece in the ATP Cup Group B tie on Wednesday.

Andrey Rublev improves to 2-0 in ATP Cup singles matches.

Jannik Sinner beats Aleksandar Vukic to earn his first win of the 2021 season on Wednesday.

Matteo Berrettini takes a 2-0 ATP Head2Head series lead against Gael Monfils by beating the Frenchman at the ATP Cup.

Fabio Fognini wins 53 per cent of his return points to beat Benoit Paire Wednesday at the ATP Cup.

Fabio Fognini earns his first singles win of the 2021 ATP Cup, defeating Benoit Paire in straight sets to give Italy a 1-0 lead against France.

Roberto Bautista Agut receives support from Rafael Nadal in the Spain team zone.

Roberto Bautista Agut owns a 7-0 record at the ATP Cup.

Daniil Medvedev gets the better of Diego Schwartzman on Tuesday to give Russia victory over Argentina at the ATP Cup.

Andrey Rublev powers his way to victory over Guido Pella of Argentina on Tuesday to hand Russia an early lead in the ATP Cup Group D tie.

Alex de Minaur owns a 3-2 record across singles and doubles at the ATP Cup.

Serbia owns a 7-0 record in ATP Cup ties.

Matteo Berrettini takes a 3-2 ATP Head2Head lead against Dominic Thiem by beating the Austrian in straight sets Tuesday at the ATP Cup.

Dennis Novak beats Fabio Fognini in straight sets to give Team Austria its first match win of the 2021 ATP Cup.

Team Japan captain Max Mirnyi has been a part of Kei Nishikori's coaching team since December 2019.

Team Austria will try to advance through Group C to reach the semi-finals of the ATP Cup.

World No. 1 Novak Djokovic went 8-0 in singles and doubles for Serbia at last year's ATP Cup.

Spain's Rafael Nadal trains on Sunday ahead of the 2021 ATP Cup, which begins on 2 February.

Novak Djokovic, who went a combined 8-0 in singles and doubles at last year's ATP Cup, will hope to lead Team Serbia to another title.

Alexander Zverev will lead Germany in the ATP Cup as his country's No. 1 singles player for the second consecutive year.

Alexander Zverev will face Novak Djokovic and Denis Shapovalov at the ATP Cup.

Led by Top 10 players Daniil Medvedev and Andrey Rublev, Team Russia captured the 2021 ATP Cup title with a victory over Italy in the final.

Team Russia clinches the 2021 ATP Cup trophy with a victory over Italy in the final.

Andrey Rublev imposes his will on Fabio Fognini with a series of crushing forehands from the baseline.

Daniil Medvedev clinches Russia's place in the ATP Cup final.

Andrey Rublev, No. 8 in the FedEx ATP Rankings, moves into the second round at the Australian Open after defeating Yannick Hanfmann.

Dusan Lajovic is representing Team Serbia at ATP Cup for the second year in a row.

Japan will try to navigate through Group D against Russia and Argentina at the ATP Cup.

Gael Monfils (center) leads Team France for the second year in a row.

Stefanos Tsitsipas (center) leads the charge for Team Greece at the ATP Cup.

Argentina stops for a team portrait before the ATP Cup, which starts on 2 February.

Team Italy look to be in high spirits before the start of the ATP Cup.

Jan-Lennard Struff is competing in the ATP Cup for the second time.

Milos Raonic is making his ATP Cup debut.

Novak Djokovic looks to lead Serbia to back-to-back ATP Cup titles.

World No. 2 Rafael Nadal hits the practice court in Melbourne ahead of the ATP Cup.

Rafael Nadal will reprise his role as Spain’s No.1 singles player at the ATP Cup.

Rafael Nadal is all smiles as he shares the practice court with Matteo Berrettini (left).

Spanish No. 1 Rafael Nadal practises with Italy’s No. 1 Matteo Berrettini before the start of the ATP Cup.

(From left) Evgeny Donskoy, Andrey Rublev, Daniil Medvedev and Aslan Karatsev pose for a Team Russia portrait ahead of the ATP Cup.

World No. 1 Novak Djokovic leads defending champion Serbia for the second year in a row.

Kei Nishikori pairs up with Fabio Fognini (far right) in preparation for the ATP Cup.

Kei Nishikori is set to make his ATP Cup debut as Japan’s No.1 singles player.

Novak Djokovic hits a tweener in practice ahead of the ATP Cup.

Daniil Medvedev returns to the ATP Cup after leading Russia to last year’s semi-final.

Italy’s No. 2 singles player Fabio Fognini warms up ahead of the ATP Cup.

Reigning Nitto ATP Finals champion Daniil Medvedev is ready for impact at the ATP Cup.

After dropping the first set, Andrey Rublev won nine of the next 10 games against Jan-Lennard Struff.