| Date: | January 21–27 |
| Edition: | 2nd |
| 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, United States |
| Venue: | Newport Beach Tennis Club |
| Champms: |  Taylor Fritz |
| Champmd: | Robert Galloway / Nathaniel Lammons |
| Champws: |  Bianca Andreescu |
| Champwd: | Hayley Carter / Ena Shibahara |
The 2019 Oracle Challenger Series – Newport Beach was a professional tennis tournament played on outdoor hard courts. It was the second edition of the tournament, which is part of the 2019 ATP Challenger Tour[1] and the 2019 WTA 125K series.[2] It took place from January 21–27, 2019 in Newport Beach, 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 | 50 | 1 | ||
| Mackenzie McDonald | 81 | 3 | ||
 Italy | Paolo Lorenzi | 116 | 4 | |
| Canada | Peter Polansky | 118 | 5 | |
| Jason Jung | 120 | 6 | ||
 Serbia | Miomir Kecmanović | 125 | 7 | |
| Bjorn Fratangelo | 133 | 8 | ||
| Noah Rubin | 140 | 9 | ||
| Dominik Köpfer | 160 | 10 | ||
| Christopher Eubanks | 170 | 11 | ||
| Darian King | 171 | 12 | ||
 Ecuador | Roberto Quiroz | 181 | 13 | |
| Ernesto Escobedo | 190 | 14 | ||
| Canada | Brayden Schnur | 196 | 16 |
The following players received wildcards into the singles main draw:
Ulises Blanch Taylor Fritz Marcos Giron Patrick Kypson Roy SmithThe following player received entry into the singles main draw as an alternate:
The following players received entry from the qualifying draw:
Maxime Cressy Evan SongThe following player received entry as a lucky loser:
Alafia Ayeni| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
 Sweden | Rebecca Peterson | 64 | 1 | |
| Tatjana Maria | 74 | 2 | ||
| Canada | Eugenie Bouchard | 79 | 3 | |
| Madison Brengle | 88 | 4 | ||
| Taylor Townsend | 93 | 5 | ||
| Canada | Bianca Andreescu | 106 | 6 | |
| Jessica Pegula | 113 | 7 | ||
 Russian Federation | Sofya Zhuk | 119 | 8 | |
 Czech Republic | Marie Bouzková | 121 | 9 | |
| Sachia Vickery | 123 | 10 | ||
 Belgium | Yanina Wickmayer | 126 | 11 | |
| Nicole Gibbs | 127 | 12 | ||
 Japan | Misaki Doi | 133 | 13 | |
| Claire Liu | 138 | 14 | ||
| Varvara Lepchenko | 140 | 15 | ||
| Jil Teichmann | 148 | 16 |
The following players received wildcards into the singles main draw:
The following players received entry from the qualifying draw:
Sofia Kenin → replaced by 
Urszula Radwańska
Kristína Kučová → replaced by Lena Rüffer Anna Karolína Schmiedlová → replaced by Mari Osaka CoCo Vandeweghe → replaced by Kayla Day| Country | Player | Country | Player | Rank1 | Seed | |
|---|---|---|---|---|---|---|
| Alexa Guarachi |  Mexico | Giuliana Olmos | 156 | 1 | ||
| Sabrina Santamaria | Russian Federation | Valeria Savinykh | 193 | 2 | ||
| Taylor Townsend | Belgium | Yanina Wickmayer | 283 | 3 | ||
 Kazakhstan | Anna Danilina | Ingrid Neel | 297 | 4 |
The following pair received wildcard into the doubles main draw:
See main article: article and 2019 Oracle Challenger Series – Newport Beach – Men's singles.
Taylor Fritz def. Brayden Schnur, 7–6(9–7), 6–4See main article: article and 2019 Oracle Challenger Series – Newport Beach – Women's singles.
Bianca Andreescu def. Jessica Pegula 0–6, 6–4, 6–2See main article: article and 2019 Oracle Challenger Series – Newport Beach – Men's doubles.
Robert Galloway / Nathaniel Lammons def. Romain Arneodo / 
Andrei Vasilevski 7–5, 7–6(7–1)See main article: article and 2019 Oracle Challenger Series – Newport Beach – Women's doubles.
Hayley Carter / Ena Shibahara def. Taylor Townsend / Yanina Wickmayer, 6–3, 7–6(7–1)