SIOUX FALLS, S.D., October 30, 2026 (Media Release)
The quarterfinals at the MarketBeat Open on Friday are headlined by rising American teenager No. 3 seed Darwin Blanch along with countrymen Aidan Mayo and J.J. Wolf.
In the first match on, 19-year-old Dutchman Mees Rottgering, who is a sophomore at Wake Forest Univ., takes on Mayo for the first time. Rottgering is appearing in his third straight Challenger quarterfinal and he is 15th in the Next Gen Race to Reggio Calabria standings. Mayo is also making his third straight Challenger quarterfinal showing.
In the next match on, Swiss native Dylan Dietrich who is the No. 1 collegiate player in the country, plays Wolf. Dietrich, a 22-year-old senior at the Univ. of Virginia, defeated top seed and World No. 94 Jenson Brooksby for his first career Top 100 win on Wednesday.
The Zurich native comes in on a seven-match winning streak and he has compiled a 15-3 record in his last five tournaments, highlighted by his first career ATP Challenger title in Columbus, Ohio on October 4. In the first round, he beat Wolf 7-6(6), 6-3.
Wolf, who was sidelined for a year due to a right shoulder injury he suffered in Delray Beach in February 2025, is nearly back in the Top 200 (No. 201 in ATP Live Rankings) after being unranked in February this year. This is Wolf’s fourth Challenger quarterfinal of the season.
In the third match, Max Hans Rehberg of Germany plays Slovenian qualifier Sebastian Dominko, who is the lowest-ranked player remaining at No. 554. Rehberg is making his fifth Challenger quarterfinal showing of the season while the 6’8” Dominko is appearing in his first career Challenger quarterfinal. Dominko fired 19 aces in his 7-5, 7-5 victory over No. 2 seed and World No. 117 Valentin Royer of France while the 23-year-old Rehberg, who is playing in only his second career pro tournament in the U.S., defeated Stefan Kozlov 7-5, 6-4 on Thursday.
In the final match on, Blanch and Draxl, who are the only seeds remaining, square off for the second straight year in Sioux Falls. Draxl won 6-4, 6-4, in the first round a year ago.
Blanch saved four match points and rallied to defeat countryman Mitchell Krueger 6-7(5), 6-4, 7-5, winning the last five games of the match. Blanch was serving at 2-5 in the third set and fought off four match points before breaking Krueger in the ninth game. Blanch held for 5-5, broke at love in the 11th game and served out the match to reach his 10th Challenger quarterfinal of the season.
Blanch, who at 19 years, 1 month, is the youngest player in the Top 150 ATP Rankings at a career-high No. 144, improved his record to 31-18 in Challenger play (20-11 on hard).
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Draxl advanced to his seventh quarterfinal of the season when qualifier Daniil Ostapenkov retired due to a upper left leg injury with Ostapenkov leading 5-4 and Draxl serving at 30-0.
