The 2025 San Diego Open known as the Better Buzz San Diego Open, was a professional tennis tournament played on hardcourts. It was the first edition of the tournament as an ATP Challenger Tour event which was part of the 2025 ATP Challenger Tour. It took place in San Diego, United States from 24 February to 2 March 2025. It returned as an ATP Challenger 100 replacing the WTA 500 event.^[1]

Country	Player	Rank1	Seed
FRA	Arthur Cazaux	100	1
USA	Tristan Boyer	109	2
GER	Dominik Koepfer	113	3
USA	Mackenzie McDonald	115	4
POL	Kamil Majchrzak	116	5
JPN	Taro Daniel	117	6
USA	Mitchell Krueger	140	7
USA	Ethan Quinn	144	8

• ¹ Rankings are as of 17 February 2025.^[2]

The following players received wildcards into the singles main draw:

• Tristan Boyer
• Jenson Brooksby
• Trevor Svajda

The following player received entry into the singles main draw as an alternate:

• Govind Nanda

The following players received entry from the qualifying draw:

• Blaise Bicknell
• Alex Hernández
• Andres Martin
• Rohan Murali
• Alfredo Perez
• Alex Rybakov

The following player received entry as a lucky loser:

• Stefan Dostanic

• Eliot Spizzirri def. Mackenzie McDonald 6–4, 2–6, 6–4.

• Eliot Spizzirri / Tyler Zink def. Juan José Bianchi / Noah Zamora 6–7^(3–7), 7–6^(7–4), [10–8].

• Official Website