2020 ATP Finals

2020 ATP Finals
Date	15–22 November
Edition	51st (singles) / 46th (doubles)
Category	ATP Finals
Draw	8S / 8D
Surface	Hard / indoor
Location	London, United Kingdom
Venue	The O2 Arena
Champions
Singles
Daniil Medvedev
Doubles
Wesley Koolhof / Nikola Mektić
← 2019 · ATP Finals · 2021 →

The 2020 ATP Finals (also known as the 2020 Nitto ATP Finals for Nitto sponsorship) was a men's tennis year-end tournament played at the O₂ Arena in London, United Kingdom, from 15 to 22 November 2020. It was the season-ending event for the highest-ranked singles players and doubles teams on the 2020 ATP Tour. This was the final year that London hosted the event. On 14 August 2020, it was announced the tournament would be held without spectators in attendance following guidelines imposed due to the COVID-19 pandemic in the United Kingdom.^[1]

The tournament took place from 15 to 22 November at the O₂ Arena in London, United Kingdom. It was the 51st edition of the tournament (46th in doubles). The tournament was run by the Association of Tennis Professionals (ATP) and was part of the 2020 ATP Tour. The event took place on indoor hard courts. It served as the season-ending championships for players on the ATP Tour.

In singles (and in doubles with teams in place of individual players), the eight players who qualified for the event were split into two groups of four. During this stage, players competed in a round-robin format. The two players in each group with the best results, including head-to-head records, progressed to the semifinals, where the winners of a group faced the runners-up of the other group. This stage, however, was a knock-out stage.