ATP - San Diego 1R continued

First round continued in San Diego.

2021 San Diego Open - an ATP 250 tournament, on Hard, in San Diego, California, USA, 27 September - 3 October 2021.

No defending champion:

This is a new tournament on the ATP calendar.

Kei Nishikori withdrew after the main draw was published due to a back injury, and was replaced by lucky loser Denis Kudla.

Soonwoo Kwon withdrew after the main draw was published due to a shoulder injury, and was replaced by lucky loser Kevin Anderson.

First round results:

- Lloyd Harris defeated qualifier Christopher Eubanks 3-6 6-1 6-4

- Diego Schwartzman (6) defeated qualifier Federico Gaio 6-2 6-3

- Cameron Norrie defeated Dominik Koepfer 6-2 7-5

- Grigor Dimitrov defeated Marton Fucsovics 6-3 1-6 7-5

- Lorenzo Sonego (9) defeated Nikoloz Basilashvili 6-3 6-4

- Sebastian Korda defeated Tommy Paul 6-3 5-7 6-1

- Wildcard Andy Murray defeated lucky loser Denis Kudla 6-3 6-2