HOUSTON/STARNBERG, April 8, 2022
John Isner, the 2013 Fayez Sarofim & Co. U.S. Men’s Clay Court Championship winner, hit a US Clay record 38 aces and saved a match point in his 6-7(1), 7-6(4), 6-3 victory against two-time champion Steve Johnson on Thursday night. Ironically, the previous tournament record of 35 was set by Isner in the 2017 River Oaks quarterfinals.
Opelka Eyes First River Oaks Semifinals, Faces Houston-Born Brouwer Friday
No. 3 seed Reilly Opelka takes on Houston-born Gijs Brouwer on Friday not before 12 noon local time on Stadium Court. After winning his third career title in Dallas in February, Opelka is currently on a five-match win streak in events played in Texas. Brouwer, who is in his first ATP Tour main draw, is the third qualifier in the last two River Oaks events to reach the quarterfinals.
Wild Card Kyrgios, Lucky Loser Mmoh Battle For Semifinal Spot
Australian wild card Nick Kyrgios, who made his second quarterfinals in a United States event this season, looks for his first final four at River Oaks. Kyrgios takes on US-American Michael Mmoh, who became the first lucky loser in the Open Era to advance to the US Clay quarterfinals.
* There will be five US-Americans (Taylor Fritz, Reilly Opelka, John Isner, Frances Tiafoe, Michael Mmoh) in the quarterfinals at River Oaks in 2022, tying the most at US Clay in the Houston-era (since 2001). This will be the third time in the last four tournaments at River Oaks where five Americans were a part of the final eight.
* Tiafoe made his first-ever quarterfinals at River Oaks.
* Top-ranked US-American Fritz won his first match on clay this season. He has now won nine of his last 10 matches
* Cristian Garin reached his 16th Tour-level quarterfinals
The QFs are set in Houston! 🔥
— ATP Tour (@atptour) April 8, 2022
Thursday, April 7, 2022
Singles – Second Round
 Taylor Fritz (USA) def. Alejandro Tabilo (Chile) 6-1, 6-4
 John Isner (USA) def. Steve Johnson (USA) 6-7(1), 7-6(4), 6-3
 Cristian Garin (Chile) def. Jordan Thompson (Australia) 3-6, 6-3, 6-3
 Frances Tiafoe (USA) def. Pablo Cuevas (Uruguay) 5-7, 7-5, 7-6(4)
Doubles – Quarterfinals
 Matthew Ebden (Australia) & Max Purcell (Australia) def. Nick Monroe (USA) & Fernando Romboli (Brazil) 6-2, 6-2
Ivan Sabanov (Serbia) & Matej Sabanov (Serbia) def. [WC]  Nick Kyrgios (Australia) & Jack Sock (USA) 6-4, 6-2
[WC] William Blumberg (USA) & Max Schnur (USA) def. Robert Galloway (USA) & Jackson Withrow (USA) 6-4, 6-3
Pablo Cuevas (Uruguay) & Hunter Reese (USA) def. Luke Saville (Australia) & John-Patrick Smith (Australia) 5-7, 6-3, 10-4