2018 Kunal Patel San Francisco Open

The 2018 Kunal Patel San Francisco Open was a professional tennis tournament played on indoor hard courts. It was the second edition of the tournament and was a part of the 2018 ATP Challenger Tour. It took place in San Francisco, United States from February 5–11, 2018.

Seeds

 * 1 Rankings are as of January 29, 2018.

Other entrants
The following players received wildcards into the singles main draw:
 * 🇺🇸 Christopher Eubanks
 * Christian Garín
 * 🇫🇷 Florian Lakat
 * 🇺🇸 Danny Thomas

The following players received entry from the qualifying draw:
 * 🇺🇸 JC Aragone
 * 🇦🇷 Máximo González
 * 🇺🇸 Jared Hiltzik
 * 🇧🇷 Karue Sell

Singles

 * Jason Jung def. 🇩🇪 Dominik Köpfer 6–4, 2–6, 7–6(7–5).

Doubles

 * Marcelo Arévalo / 🇻🇪 Roberto Maytín def. 🇬🇧 Luke Bambridge / 🇬🇧 Joe Salisbury 6–3, 6–7(5–7), [10–7].