The Oracle Challenger Series – Houston is a professional tennis tournament played on hard courts. It is currently part of the ATP Challenger Tour and the Women's Tennis Association (WTA) 125K series. It is held annually in Houston, United States since 2018. The ATP Challenger Tour returned to Houston, Texas for the first time since 2001, with the inaugural Oracle Challenger Series Houston making its debut in November. Held on the campus of Rice University, at the new $9 million George R. Brown Tennis Complex. Houston is will become one of just two U.S. cities to host tournaments on both the ATP World Tour and ATP Challenger Tour, with the ATP World tour tournament being the U.S. Men's Clay Court Championships. The Oracle Challenger Series – Houston is the second stop for the Oracle Challenger Series calendar. The winner of the Oracle Challenger Series earns a wild card into Indian Wells Masters.

Past finals

Men's singles

YearChampionRunner-upScore
2020Cancelled due to the COVID-19 pandemic
2019United States Marcos GironCroatia Ivo Karlović7–5, 6–7(5–7), 7–6(11–9)
2018United States Bradley KlahnUnited States Roy Smith7–6(7–4), 7–6(7–4)

Women's singles

YearChampionRunner-upScore
2020Cancelled due to the COVID-19 pandemic
2019Belgium Kirsten FlipkensUnited States CoCo Vandeweghe7–6(7–4), 6–4
2018China Peng ShuaiUnited States Lauren Davis1–6, 7–5, 6–4

Men's doubles

YearChampionsRunners-upScore
2020Cancelled due to the COVID-19 pandemic
2019Israel Jonathan Erlich Mexico Santiago GonzálezUruguay Ariel Behar Ecuador Gonzalo Escobar6–3, 7–6(7–4)
2018United States Austin Krajicek United States Nicholas MonroeEl Salvador Marcelo Arévalo United States James Cerretani4–6, 7–6(7–3), [10–5]

Women's doubles

YearChampionsRunners-upScore
2020Cancelled due to the COVID-19 pandemic
2019Australia Ellen Perez Brazil Luisa StefaniCanada Sharon Fichman Japan Ena Shibahara1–6, 6–4, [10–5]
2018United States Maegan Manasse United States Jessica PegulaUnited States Desirae Krawczyk Mexico Giuliana Olmos1–6, 6–4, [10–8]