Russia's Andrey Rublev has finished the year at world number eight ©Getty Images

Andrey Rublev and Diego Schwartzman were the two new names in the top ten of the year-end Association of Tennis Professionals (ATP) world rankings.

Russia's Rublev finished the year at world number eight.

Despite the disruption caused by the COVID-19 pandemic, he earned five ATP Tour titles and reached the quarter-finals of the US Open and French Open. 

Argentina's Schwartzman placed ninth in the world, having made the final of the Italian Open where he lost to Novak Djokovic. 

He also progressed to the semi-finals of the French Open. 

Djokovic topped the end of year world rankings for a record-equalling sixth time.

The Serbian previously finished the year as world number one in 2011, 2012, 2014, 2015 and 2018.

He equals the record set by America's Pete Sampras, who ended six straight years at the top of men's tennis between 1993 and 1998, and, at 33-years-old, is now the oldest year-end ATP number one. 

This year, Djokovic earned a record eighth Australian Open and 17th Grand Slam title in February.

He also helped Serbia to victory in the inaugural ATP Cup in January and finished as runner-up to Rafael Nadal at the French Open. 

It has also been a controversial year for Djokovic, however. 

Diego Schwartzman of Argentina finished the year at world number nine after reaching the French Open semi-finals ©Getty Images
Diego Schwartzman of Argentina finished the year at world number nine after reaching the French Open semi-finals ©Getty Images

He was heavily criticised for organising the Adria Tour across four nations in the Balkans during the height of the COVID-19 pandemic in June, and was disqualified from the US Open in September after accidentally hitting a line judge with a ball after reacting to a dropped point in frustration. 

French Open winner Nadal finished the year at second for the seventh time, with the Spaniard also placing in the top two for a record 12th time.

Austria's Dominic Thiem took third place after clinching his first Grand Slam title at the US Open and making the Australian Open final. 

Swiss tennis legend Roger Federer finished the year in fifth, despite missing most of the year through injury. 

Five players aged 24-and-under finished in the top 10 for the first time since 2009, led by Russia's ATP Finals winner Daniil Medvedev at number four. 

Greece's Stefanos Tsitsipas is at number six, Germany's Alexander Zverev is at number seven and Matteo Berrettini of Italy is at number 10. 

At 23-years-old, Rublev is also among the younger group.