Petar Mitsin<\/strong> set a 400 free world junior record of 3:44.31 at the European Juniors<\/strong> to eclipse Rio 2016 Olympic champion Mack Horton<\/strong>‘s standard that had stood since 2014.<\/p>\n Horton went 3:44.60 in Brisbane, Australia, in April 2014, eight months after winning the world junior title.<\/p>\n The Bulgarian went fourth in the world with his performance as he completed the 200-400-800 treble which also featured a championship record of 7:47.45<\/a> in the longest race and 1:46.50 over four lengths<\/a>, all of them national standards.<\/p>\n It also lowered Lorenzo Galossi<\/strong>‘s European junior mark of 3:45.93 in Riccione in April 2022 and took down Yannick Agnel<\/strong>‘s European Juniors CR of 3:46.26 that stood since July 2010.<\/p>\n His 400 would have earned Mitsin bronze at last year’s European Championships<\/strong> in Rome and sixth at the 2022 worlds in Budapest.<\/p>\n Splits<\/strong>: 26.05\/54.31 (28.26)\/1:22.71 (28.40)\/1:51.00 (28.29)\/2:19.27 (28.27)\/2:47.91 (28.64)\/3:16.36 (28.45)\/3:44.31 (27.95).<\/p>\n Alessandro Ragaini<\/strong> was second in 3:48.42 with Vlad Stancu<\/strong> claiming his third medal of the 2023 European Juniors<\/strong> in 3:50.21.<\/p>\n 2023 Ranking<\/strong>s<\/p>\n 3:42.46: Sam Short, Australian Championships, 17 April 2023<\/p>\n 3:43.32: Lukas Martens, 32nd International Gothaer & Friends Meet, 1 April 2023<\/p>\n 3:43.48: Elijah Winnington, Australian National Trials, 13 June 2023<\/p>\n 3:44.31: Petar Mitsin, European Juniors, 9 July 2023<\/p>\n 3:44.35: Dan Wiffen, Swim Open Stockholm, 13 April 2023<\/p>\n\n