By Mark Wild on SwimSwam
2025 World Championships
July 27 – August 3, 2025 (pool swimming) Singapore, Singapore World Aquatics Championships Arena LCM (50m) Meet Central How To Watch SwimSwam Preview Index Entry Book Live Results Live Recaps Prelims: Day 1 | Day 2 | Day 3 Finals: Day 1 | Day 2 | Day 3Day 4 Prelims Heat Sheet
Hungary and Nigeria have both opted not to field relays this morning, but the big news is that the United States has called upon Keaton Jones to occupy the backstroke leg for their mixed medley relays. Both of the male backstrokers for the USA failed to advance out of the heats, with Tommy Janton finishing in 18th (53.87) and Jack Aikins in 44th (56.54). The pair who finished one-two at trials in times of 53.00 and 53.19, both seemed to be severely affected by the illness that was reportedly going through the Team USA ranks.
Jones, who made the team as the USA second entrant in the 200 back, placed 4th at US trials with a time of 53.79, a new personal best. Behind Jones, the USA are using Campbell McKean on breaststroke, Torri Huske on butterfly and Simone Manuel on freestyle. McKean was the slower of the two male breaststrokers, likely meaning that Josh Matheny will sub in for tonight. With Huske on the fly duties, that likely means Walsh would sub into those duties, with Huske, Douglass or Manuel taking on the freestyle, if they stick to the MMFF order.
Australia, one lane below them, have left Kaylee McKeown off the relay, likely saving her for tonight, and are using Hannah Fredericks to lead them off.
In the heat before the USA and Australia, the Chinese are opting to go MMFF and are leading off with Xu Jiayu, and Dong Zhihao, and will likely sub Qin Haiyang for the breaststroke. One lane below them, the French, who finished 4th in Paris, are opting for Mewen Tomac and Jeremie Delbois on the front half. In Paris, Yohann Ndoye-Brouard, who just broke 52 for the first time and set a new national record in the 100 back, led the team off with Leon Marchand, who has the prelims of the 200 IM this morning, taking on the breaststroke duties.
Heat 1 – Mixed 4×100 Medley Relay
Lane 0 – MadagascarFrancky RamiakatrarivoJonathan RaharvelOny Mbolasoa AndrianaivoAntsa Rabejaona Lane 1 – Macau, ChinaWeng Chi CheangMan Hou ChaoChi Chong LamPui Lam Chen Lane 2 – MongoliaAriuntamir Enkh-AmgalanErkhes EnkhturEnkhkhuslen BatbayarEnkhtamir Batbayar Lane 3 – ArmeniaVarsenik ManucharyanAshot ChakhoyanYeva KarapetyanLevon Kocharyan Lane 4 – ArubaPatrick GrotersMikel SchreudersAvigayle TrompElisabeth Timmer Lane 5 – MaldivesAmna Thazkiyah MirsaadMohamed Aan HussainMohamed Rihan ShihamMeral Ayn Latheef Lane 6 – RwandaAragsan MugaboKalisa KezaOscar Cyusa Peyre MitillaKevin Kaiga Lane 7 – Dominican RepublicElizabeth JimenezJosue DominguezJavier NunezMaria Alejandra Fernandez Lane 8 – Faroe IslandsBjarta I LagaboLea HojstedIsak BrisenfeldtLiggjas Joensen Lane 9 – SamoaKokoro FrostJohann SticklandPaige Schendelaar-KempKaiya BrownHeat 2 – Mixed 4×100 Medley Relay
Lane 0 – Cabo VerdeRohan ShearerJayla PinaKaila DacruzJose Tati Lane 1 – NigeriaDid Not Start Lane 2 – Papua New GuineaJhnayali Tokome-GarapJoanna ChenNathaniel NokaJosh Tarere Lane 3 – UgandaKirabo NamutebiTendo MukalaziJesse Ssuubi SsengonziGloria Anna Muzito Lane 4 – GhanaNubia AdjeiHarry StaceyAbeku JacksonJoselle Mensah Lane 5 – ArgentinaUlises SaraviaMacarena CeballosUlises CazauAndrea Berrino Lane 6 – MexicoCelia Pulido OrtizMiguel Alejandro de Lara OjedaMiranda Grana PerezAndres Dupont Cabrera Lane 7 – KenyaImara Bella Patricia ThorpeHaniel KudwoliStephen NyoikeSara Mose Lane 8 – Northern Mariana IslandsPiper RahoMaria Corazon Ayson BatallonesKouki Cerezo WatanabeMichael Miller Lane 9 – Neutral Athletes BMiron LifintsevDanil SemianinovDaria KlepikovaAleksandra KuznetsovaHeat 3 – Mixed 4×100 Medley Relay
Lane 0 – South AfricaPieter CoetzeKaylene CorbettErin GallagherMatthew Caldwell Lane 1 – PolandKsawery MasiukDominika SztanderaJakub MajerskiKatarzyna Wasick Lane 2 – IsraelAnastasia GorbenkoGur Jonathan ItzhakiArielle HayonDenis Loktev Lane 3 – NetherlandsMaaike de WaardCaspar CorbeauNyls KorstanjeMilou van Wijk Lane 4 – People’s Republic of ChinaXu JiayuDong ZhihaoYu YitingCheng Yujie Lane 5 – FranceMewen TomacJeremie DelboisMarie WattelAlbane Cachot Lane 6 – JapanRiku MatsuyamaTaku TaniguchiMizuki HiraiNagisa Ikemoto Lane 7 – SwedenHanna RosvallErik PerssonLouise HanssonRobin Hanson Lane 8 – SpainEstella TonrathNil Cadevall MicolauArbidel GonzalezMaria Daza Garcia Lane 9 – SingaporeZackery Quan Long TayChun Ho ChanMegan Janice Yo Ee XinTing Wen QuahHeat 4 – Mixed 4×100 Medley Relay
Lane 0 – IcelandGudmundur Leo RafnssonEinar Margeir AgustssonJohanna Elin GudmundsdottirSnaefridur Sol Jorunnardottir Lane 1 – GreeceEvangelos MakrygiannisSavvas ThomoglouAnna NtountounakiArtemis Vasilaki Lane 2 – GermanyVincent PassekLucas MatzerathAngelina KohlerNina Holt Lane 3 – CanadaIngrid WilmOliver DawsonJosh LiendoBrooklyn Douthwright Lane 4 – United States of AmericaKeaton JonesCampbell McKeanTorri HuskeSimone Manuel Lane 5 – AustraliaHannah Jane FredericksNash WilkesAlexandria PerkinsKai Taylor Lane 6 – Great BritainKatie ShanahanMax MorganEdward MildredFreya Anderson Lane 7 – ItalyChristian BacicoLudovico VibertiCostanza CocconcelliSara Curtis Lane 8 – HungaryDid Not Start Lane 9 – Hong Kong, ChinaHayden KwanSai Ting Adam MakHoi Ching YeungSum Yiu LiRead the full story on SwimSwam: 2025 World Championships: Day 4 Prelims – Relay Lineups (Mixed 4×100 Medley)
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