| Date: | January 27–February 2 |
| Edition: | 3rd |
| Draw: | 48S / 16D |
| Surface: | Hard, outdoor |
| Prize Money: | $162,480+H (ATP) $162,480 (WTA) |
| Category: | ATP Challenger Tour WTA 125K series |
| Location: | Newport Beach, California, United States |
| Venue: | Newport Beach Tennis Club |
| Champms: |  Thai-Son Kwiatkowski |
| Champws: | Madison Brengle |
| Champmd: | Ariel Behar /  Gonzalo Escobar |
| Champwd: | Hayley Carter /  Luisa Stefani |
The 2020 Oracle Challenger Series – Newport Beach was a professional tennis tournament played on outdoor hard courts. It was the third edition of the tournament, which was part of the 2020 ATP Challenger Tour[1] and the 2020 WTA 125K series.[2] It took place from January 27 – February 2, 2020 at the Newport Beach Tennis Club in Newport Beach, California, United States.
| Event | Round of 16 | Round of 32 | Round of 48 | width=85 | width=85 | ||||||
| Men's singles | 125 | 75 | 45 | 25 | 10 | 5 | 0 | 0 | 0 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Men's doubles | 0 | ||||||||||
| Women's singles | 160 | 95 | 57 | 29 | 15 | 8 | 1 | 4 | 1 | ||
| Women's doubles | 1 |
| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
| Taylor Fritz | 34 | 1 | ||
| Frances Tiafoe | 50 | 2 | ||
 Serbia | Miomir Kecmanović | 54 | 3 | |
| Steve Johnson | 75 | 4 | ||
 Italy | Andreas Seppi | 85 | 5 | |
 Canada | Brayden Schnur | 103 | 6 | |
| Marcos Giron | 107 | 7 | ||
| Jason Jung | 126 | 8 | ||
| Mackenzie McDonald | 129 | 9 | ||
| Bradley Klahn | 132 | 10 | ||
| Ecuador | Emilio Gómez | 148 | 11 | |
 Romania | Marius Copil | 152 | 12 | |
| Mitchell Krueger | 164 | 13 | ||
| Rudolf Molleker | 165 | 14 | ||
 Uzbekistan | Denis Istomin | 170 | 15 | |
| Canada | Peter Polansky | 180 | 16 |
The following players received wildcards into the singles main draw:
The following player received entry into the singles main draw using a protected ranking:
The following players received entry from the qualifying draw:
| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
| Jessica Pegula | 66 | 1 | ||
| Taylor Townsend | 79 | 2 | ||
| Christina McHale | 84 | 3 | ||
| Tatjana Maria | 87 | 4 | ||
| Madison Brengle | 95 | 5 | ||
| Stefanie Vögele | 117 | 6 | ||
| Francesca Di Lorenzo | 122 | 7 | ||
| Nicole Gibbs | 124 | 8 | ||
| Usue Maitane Arconada | 131 | 9 | ||
| Allie Kiick | 138 | 10 | ||
| Verónica Cepede Royg | 146 | 11 | ||
 Belgium | Yanina Wickmayer | 147 | 12 | |
| Shelby Rogers | 155 | 13 | ||
 Ukraine | Anhelina Kalinina | 157 | 14 | |
| Robin Anderson | 161 | 15 | ||
| Varvara Lepchenko | 166 | 16 |
The following players received wildcards into the singles main draw:
Kayla Day Allie Kiick Katie Volynets Sophia WhittleThe following player received entry using a protected ranking into the singles main draw:
The following players received entry from the qualifying draw:
Yanina Wickmayer (lower back injury)| Country | Player | Country | Player | Rank1 | Seed | |
|---|---|---|---|---|---|---|
| Hayley Carter | Brazil | Luisa Stefani | 134 | 1 | ||
 Mexico | Giuliana Olmos | Sabrina Santamaria | 153 | 2 | ||
 Belarus | Lidziya Marozava | Maria Sanchez | 193 | 3 | ||
| Christina McHale |  Russian Federation | Valeria Savinykh | 264 | 4 |
The following pair received a wildcard into the doubles main draw:
The following pair received entry as alternates:
Yanina Wickmayer (lower back injury)See main article: article and 2020 Oracle Challenger Series – Newport Beach – Men's singles.
Thai-Son Kwiatkowski def. 
Daniel Elahi Galán 6–4, 6–1.See main article: article and 2020 Oracle Challenger Series – Newport Beach – Women's singles.
Madison Brengle def. Stefanie Vögele, 6–1, 3–6, 6–2See main article: article and 2020 Oracle Challenger Series – Newport Beach – Men's doubles.
Gonzalo Escobar def. Antonio Šančić / 
Tristan-Samuel Weissborn 6–2, 6–4.See main article: article and 2020 Oracle Challenger Series – Newport Beach – Women's doubles.
Hayley Carter / Luisa Stefani def. Marie Benoît / 
Jessika Ponchet, 6–1, 6–3
