Osan's Alexander Eaglin blocks a shot by Humphreys' Luke Han during Wednesday's Korea boys volleyball match won by the Blackhawks in four sets. (Lily Austinson/Special to Stripes)

Osan's Alexander Eaglin blocks a shot by Humphreys' Luke Han during Wednesday's Korea boys volleyball match won by the Blackhawks in four sets. (Lily Austinson/Special to Stripes)

Humphreys' Matthew Oh drills a shot between Osan's Alexander Eaglin and Kemari Nash during Wednesday's Korea boys volleyball match won by the Blackhawks in four sets. (Lily Austinson/Special to Stripes)

Osan's Timothy Petrae tries to place a shot past Humphreys' Marin Kwon during Wednesday's Korea boys volleyball match won by the Blackhawks in four sets. (Lily Austinson/Special to Stripes)

Humphreys' Jalynn Knight drills a shot between Osan's Kaiyana Schniers and Abigail Anderson during Wednesday's Korea girls volleyball match won by the Blackhawks in three sets. (Dave Ornauer/Stars and Stripes)

Humphreys' Jalynn Knight jump serves against Osan during Wednesday's Korea girls volleyball match won by the Blackhawks in three sets. (Dave Ornauer/Stars and Stripes)

Humphreys' Alaina Areniego sends a shot past Osan's Shaylee Ungos during Wednesday's Korea girls volleyball match won by the Blackhawks in three sets. (Dave Ornauer/Stars and Stripes)

Humphreys' Sergio Altamiranda, flanked by teammates Devyn Lewis and Timothy Kilburn, leads the pack en route to taking first during Tuesday's Korea cross country race. Kilburn finished second and Lewis third. (Claire Anderson/Special to Stripes)

Humphreys' David Bellas slaps a forehand return against Chadwick's Jason Cho during Thursday's Korea tennis matches. Cho beat Bellas 8-0. (Dave Ornauer/Stars and Stripes)

Humphreys' Daul Bae delivers a serve against Chadwick's John Yoon during Thursday's Korea tennis matches. Yoon beat Bae 8-2. (Dave Ornauer/Stars and Stripes)

Humphreys' Mellissa Pritchett smacks a forehand return against Chadwickl's Sophie Cho during Thursday's Korea tennis matches. Pritchett won 8-2. (Dave Ornauer/Stars and Stripes)

Humphreys' Ashley Kim rips a backhand return against Chadwick''s May Jin during Thursday's Korea tennis matches. Jin beat Kim 8-5, Kim's first defeat of the season. (Dave Ornauer/Stars and Stripes)

Humphreys' Hana Ro hits a backhand return against Chadwick''s Paula Garcia during Thursday's Korea tennis matches. Ro won 8-5. (Dave Ornauer/Stars and Stripes)

Humphreys' Toto Kang rips a forehand return during Thursday's Korea tennis matches. Kang and her partner Chelyn Park beat Chadwick's Jimin Lee and Alice Seo 8-5. (Dave Ornauer/Stars and Stripes)

High school

Cross country South KoreaTuesday at Camp Walker (3.12-mile course)Boys 1, Sergio Altamiranda, Humphreys, 17 minutes, 30 seconds; 2, Timothy Kilburn, Humphreys, 17:31; 3, Devyn Lewis, Humphreys, 17:49; 4, Chase Lainez, Daegu, 18:23; 5, Jacob Pennington, Osan American, 18:31; 6, R.J. Cassem, Humphreys, 18:58; 7, Adan Yu, Humphreys, 19:06; 8, Alec Vaughn, Humphreys, 19:22.28; 9, Peter Teachout, Humphreys, 19:22.84; 10, Carson Byrd, Humphreys, 19:39.Girls 1, Pharra McCulley, Humphreys, 22 minutes, 25 seconds; 2, Hanna Chung, Humphreys, 23:13; 3, Kennidi Fleming, Daegu, 23:22; 4, Mazie Tremblay, Humphreys, 23:50; 5, Katie Klapmeyer, Osan American, 23:58; 6, Kaelin Elliott, Humphreys, 24:01; 7, Samantha Hendrickson, Osan, 24:20; 8, Megan Yi, Humphreys, 24:21; 9, Alyssa Kline, Daegu, 25:40; 10, Naysa Cauley, Humphreys, 26:00.

Tennis South KoreaThursday at Camp HumphreysBoys Chadwick 5, Humphreys 0 Singles Jason Cho def. David Bellas 8-0, John Yoon def. Daul Bae 8-2, Edward Park def. Hermis Weilbacher 8-2.Doubles Frank Park and Joshua Yoon def. Micah Kim and Forrest Taylor 9-8 (7-2), Edward Song and Sean Kim def. Charles Newbegin and Minchan Kim 8-5.Girls Humphreys 4, Chadwick 1 Singles Melissa Pritchett, Humphreys, def. Sophie Cho 8-2; May Jin, Chadwick, def. Ashley Kim 8-5; Hana Ro, Humphreys, def. Paula Garcia 8-5.Doubles Toto Kang and Chelyn Park, Humphreys, def. Jimin Lee and Alice Seo 8-5; Evelyn Park and Valencia Ramirez, Humphreys, def. Kelly Park and Heidi Yoon 8-6.

JapanThursday at Camp ZamaBoys American School In Japan 2, Zama 1 Singles Reuben Fuchs, ASIJ, def. Liam Hunter 8-1; Joshua Allen, Zama, def. Hyuumin Ko 8-5.Doubles Connor Takehana and Ethan Sekiguchi, ASIJ, def. Chris Lopes and Shad Shiozawa 8-3.Girls ASIJ 4, Zama 0 Singles Hollis Cook def. Pulani Tremel 8-1, Noe Ando def. Caella Bolin 8-4.Doubles Hana Petigrew and Anokhi Ashwin def. Alina Lim and Kylah Samuelson 8-0, Riko Mito and Akemi Hosoya def. Sarah Whalen and Claire Nelson 8-0. Tuesday at Camp ZamaBoys Nile C. Kinnick 4, Zama 0 Singles Daniel Posthumus def. Kouto Yamaguchi 8-2, Matthew Manson def. Hunter 8-2.Doubles Bodhi Kuiper and Justin Crouch def. Allen and Lopes 8-0, Samuel Rexrode and Mitchel Kiszenia def. Ethan Sanchez and Shiozawa 8-1.Girls Kinnick 4, Zama 0 Singles Aleigh Lamis def. Tremel 8-2, Amary-Gail Perfecto def. Bolin 8-1.Doubles Cassi Boyer and Sarah Beth Logan def. Lim and Samuelson 8-1, Konna Manson and Qiana Powler def. Riley Egger and Whalen 8-0.

OkinawaThursday at Kadena Air BaseBoys Singles Aden Leggio, Kubasaki, def. Matt Steele 7-6 (8-6); Kai Croghan, Kubasaki, def. Evan Davis 6-0; Justin Saavedra, Kadena, def. Colin Lundberg 6-1; R.J. Smola, Kadena, def. Kai Grubbs 6-4; Cael Berry, Kubasaki, def. Nathan Asato 7-5; T.K., Miyazaki, Kadena, def. Sebastian Abanes 6-2.Doubles Smola and Brett Davis, Kadena, def. Grubbs and Henry Ruksc 7-6 (7-3); Saavedra-Steele def. Leggio-Lundberg 6-3; Croghan-Berry def. E. Davis-Asato 6-3; Iain Stanley and Kyle Jordan, Kadena, def. Abanes and Shep 6-2.Girls Singles Nancy Gutzwiller, Kubasaki, def. Mai Woodcock 6-1; Lisa Dombrowski, Kadena, def. Willow Lewis 6-0; Ally Johnson, Kadena, def. Chante Broomes 6-1; Noelle Asato, Kadena, def. Arisa Manuel 6-3; Hana Brienes, Kadena, def. Liyou Sorenson 6-2; Mayann Rivera, Kadena, def. Marisa Corn 6-3; Christine Ryan, Kadena, def. Natalie Oboza 6-0.Doubles Dombrowski-Johnson def. Broomes-Lewis 6-1; Asato-Rivera def. Manuel-Corn 6-3; Gutzwiller-Oboza def. Woodcock-Christine 6-0; Mary Tracy and Brienes, Kadena, def. Natalie Mulherin and Sorenson 6-0.

Volleyball Girls South KoreaHumphreys def. Osan 25-15, 25-16, 25-11 Wednesday at Camp HumphreysKills — Blackhawks: Zoe Weidley 7, Jalynn Knight 6. Aces — Blackhawks: Weidley 6, Madison Bridges 5. Assists — Blackhawks: Trinity Barretto 19. Digs — Blackhawks: Weidley 20, Knight 19, Isabelle Maulsby 10.

JapanSeisen def. Yokota 25-15, 25-9, 25-17 Tuesday at Yokota Air BaseKills — Phoenix: Lisa Purcell 9, Sarah Atanacio 9. Digs — Phoenix: Atanacio 9, Momoka Umemiya 7, Grace Starr 5, Liz Goff 5. Assists — Phoenix: Starr 12, Goff 9.Zama def. Kinnick 25-22, 22-25, 27-25, 25-21 Tuesday at Yokosuka Naval BaseKills — Trojans: Jessica Atkinson 15, Grace Bryant 8; Red Devils: Charley “Anela” Lau 14, Madelyn Gallo 12. Aces — Trojans: Bryant 7; Red Devils: Gallo 5. Digs — Trojans: Aika Davis 7, Remi Sherratt 7; Red Devils: Alyssa Lynch 6. Assists — Trojans: Jazlyn Rioux 23, Iris Hirata 13; Red Devils: Charlize Uptegrove 30. Block points — Trojans: Gabrielle Griffiths 8, Atkinson 5.Sacred Heart def. Yokota 25-20, 25-10, 25-13 Tuesday at Tokyo

Zama def. Sacred Heart 25-11, 25-14, 14-25, 25-17 Thursday at Camp ZamaKills — Trojans: Grace Bryant 11, Jessica Atkinson 10. Digs — Trojans: Remi Sherratt 8. Assists — Trojans: Iris Hirata 16, Jazlyn Rioux 11. Block points — Trojans: Gabrielle Griffiths 4.