Clarisse Mock and Claudius Mock pulled off an upset for the Service tennis team Friday at the Cook Inlet Conference championships.
The pair knocked off the second-seeded girls doubles team of Diana Won and Aieleen Kim, beating the West duo 6-7, 6-2, 1-0.
The rest of the tournament's seeded players all made it to Saturday's semifinals, which begin at noon at the Alaska Club East.
Champions will be crowned in a series of matches beginning at 3 p.m. with the boys doubles and girls singles finales.
Mixed doubles and boys singles championship matches are scheduled to begin at 4:30 p.m., with the girls singles final set for 5 p.m.
Girls singles
First round
Christine Hemry (South) def. Haley Casiano (Service) 6-0, 6-0.
Maggie Krafft (Chugiak) def. Sydney Bidwell (West) 6-2, 6-3.
Kaja Ferklova (South) def. Claire Mahoney (Chugiak) 6-0, 6-0.
Savannah Paull (West) def. Hyeinji Ra (East) 6-0, 6-0.
Quarterfinals
Christine Hemry (South) def. Luz Mann (Eagle River) 6-0, 6-0.
Kaja Ferklova (South) def. Kelsey Eagle (Dimond) 6-2, 6-0.
Savannah Paull (West) def. Elise Wood (Bartlett) 6-0, 6-2.
Maggie Krafft (Chugiak) vs. Maren Chadwick (Bartlett), late.
Boys singles
Quarterfinals
Joseph Hemry (South) def. Wyatt Chadwick (Bartlett) 6-0, 6-0.
Nicholai Benko (Service) def. Tyler Jang (Dimond) 6-1, 6-3.
Derek Stone (Dimond) def. Paul Yang (Bartlett) 6-1, 6-2.
Eli Neslund (East) def. Jack Green (West) 6-2, 6-0.
Girls doubles
Quarterfinals
Isabelle Jameson/Sophia Sanders (South) def. Maggie Biggs/Kaya Portor (Service) 6-0, 6-1.
Becky Larue/Kathryn Bistodeau (Chugiak) def. Maria Kling/Rachel Alda (West) 6-2, 6-4.
Peyton Brown/Lauren Robertson (South) def. Kristen Ward/Laua Sturley (Eagle River) 6-1, 6-1.
Clarisse Mock/Claudine Mock (Service) def. Diana Won/Aieleen Kim (West) 6-7, 6-2, 1-0.
Boys doubles
First round
Kyle Reem/Max Garnett (Service) def. Robert Sedwick/Daniel Luna-Sanchez (West) 1-6, 7-5, 10-5.
David Columbus/Nicola Rupf (East) def. Sean Carey/Isaiah Mills (Dimond) 3-6, 6-1, 10-8.
Timothy Alex/Thane Hatcher (Bartlett) def. Robbie Kosinski/Caleb Edwards (Chugiak) 6-0, 6-1.
Jake Brown/Lian Lincoln (South) def. Sterling Retlaff/Jilito Ramas (Eagle River) 6-2, 6-0.
Quarterfinals
Alec Clayton/Ian Bruce (Service) def. Wes Rueb/Josh Edwards (Chugiak) 6-0, 6-1.
Jake Stone/Conor Bates-Janigo (Dimond) def. Josh Balsan/Gage Webster (South) 6-0, 6-3.
David Columbus/Nicola Rupf (East) def. Kyle Reem/Max Garnett (Service) 6-0, 6-2.
Jake Brown/Lian Lincoln (South) def. Timothy Alex/Thane Hatcher (Bartlett) 6-2, 6-0.
Mixed doubles
Kyle Winkler/Kristina Yu (West) def. Liam Walton/Megahn Reese (Bartlett) 6-0, 6-0.
Chris Bailey/Khailey Yancha (South) def. Raymond Musick/Caitlin Zoleske (Eagle River) 6-0, 6-1.
Alden Butzke/Gretchen Dana (Dimond) def. Jared Elison/Emily Groth (Chugiak) 6-1, 7-5.
Nicholas Alvord/Bella Pretlow (Service) def. Marco Rivera/Mariah Yurman (East) 6-2, 6-1.