The 2021 San Diego Open was a men's tennis tournament played on outdoor hard courts. It was the 1st edition of the San Diego Open, and part of the ATP Tour 250 series of the 2021 ATP Tour. It was held at the Barnes Tennis Center in San Diego, United States, from September 27 until October 3, 2021. It was primarily organized due to the cancellation of Asian tournaments during the 2021 season, because of the ongoing COVID-19 pandemic.
Positioned one week before the 1000 Indian Wells Masters and only a 2-hour 30 min drive from Indian Wells, the San Diego Open attracted a very strong line up of players including Denis Shapovalov, Andrey Rublev, Grigor Dimitrov and Andy Murray. With 8 of the top 20 players attending and the ranking cut off being 42 to get into the main draw it was the second most competitive ATP 250 all season since Doha.
Daniel Vallverdu took on the position of managing director, Ryan Redondo was named the tournament director and Billie Jean King accepted the role of honorary tournament chair.
Casper Ruud defeated Cameron Norrie, 6âÂÂ0, 6âÂÂ2
Joe Salisbury / Neal Skupski defeated John Peers / Filip PolÃ¡à ¡ek, 7âÂÂ6<sup>(7âÂÂ2)</sup>, 3âÂÂ6, [10âÂÂ5]
The following players received wildcards into the main draw:
The following player received entry as a special exempt:
The following players received entry from the qualifying draw:
The following players received entry as lucky losers:
The following pairs received wildcards into the doubles main draw: