In January 2023 Koscak cleared 1.90m in the high jump to break the Croatian indoor U18 record held previously by Blanka Vlašić.[4] A month later in Tallinn at the Tallinn Indoor Meeting, Koscak set a new European youth best in the pentathlon, scoring 4232.[5][6] Later that month in Zagreb, Koscak scored 4585 points for the girls pentathlon which was reported as an under-18 world record score.[7][8]
In May 2023 she was awarded “rookie of the meet” when she finished ninth overall competing with senior women at the Hypo-Meeting in Gotzis.[9] It was her senior athletics debut, and she secured a new Croatian senior national record in the heptathlon of 6293 points, surpassing the tally of 5615 set by her sister Klara Koščak in May 2021.[10][11]
In February 2024, she set a new national record score in the pentathlon of 4436 points, in Talinn.[12]
Personal life
From Varaždin, she is coached by her father Patrik Koščak.[13] Her sister Klara is also a competitor in athletics.[14]
References
^"Jana Koscak". World Athletics. Retrieved 28 January 2023.