2019 Fairfield Challenger
Date	7–13 October
Edition	5th
Surface	Hard
Location	Fairfield, California, United States
Champions
Singles
Christopher O'Connell
Doubles
Darian King / Peter Polansky
← 2018 · Fairfield Challenger · 2022 →

The 2019 Fairfield Challenger was a professional tennis tournament played on hard courts. It was the fifth edition of the tournament which was part of the 2019 ATP Challenger Tour. It took place in Fairfield, California, United States between October 7 and October 13, 2019.

Country	Player	Rank1	Seed
USA	Steve Johnson	98	1
USA	Denis Kudla	106	2
USA	Marcos Giron	123	3
JPN	Taro Daniel	127	4
SLO	Blaž Rola	128	5
AUS	James Duckworth	149	6
ECU	Emilio Gómez	151	7
CAN	Peter Polansky	168	8
BAR	Darian King	169	9
ESP	Nicola Kuhn	178	10
USA	Thai-Son Kwiatkowski	188	11
AUS	Christopher O'Connell	193	12
USA	Mitchell Krueger	196	13
USA	Jack Sock	210	14
USA	Ernesto Escobedo	216	15
USA	Maxime Cressy	219	16
USA	Donald Young	238	17

• ¹ Rankings are as of September 30, 2019.^[1]

The following players received wildcards into the singles main draw:

• Brandon Holt
• Steve Johnson
• Brandon Nakashima
• Alex Rybakov
• Zachary Svajda

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

• Strong Kirchheimer

The following players received entry from the qualifying draw:

• Felix Corwin
• Sem Verbeek

The following player received entry as a lucky loser:

• Dennis Novikov

• Christopher O'Connell def. Steve Johnson 6–4, 6–4.

• Darian King / Peter Polansky def. André Göransson / Sem Verbeek 6–4, 3–6, [12–10].