2021 BNP Paribas Open

However, after Thiem ended his season early due to an ongoing wrist injury, he withdrew from the tournament.

[4] Bianca Andreescu was the defending women's singles champion from 2019, but she lost in the third round to Anett Kontaveit.

[6] The teams of Nikola Mektić and Horacio Zeballos[7] and Elise Mertens and Aryna Sabalenka[8] were the defending champions in the men's and women's doubles draws, respectively.

Mektić played alongside partner Mate Pavić as the top seeds, but the pair lost in the quarterfinals.

Sabalenka chose not to defend her title and Mertens entered alongside partner Hsieh Su-wei.

As a result of pandemic-related adjustments to the ranking system, players are defending their points from the 2019 tournament (which had already been reduced by 50%), as well as from tournaments held during the weeks of 7 and 14 October 2019 (Shanghai, Stockholm, Antwerp and/or Moscow) and 12 October 2020 (St. Petersburg, Cologne or Sardinia).