Performance DevelopmentJAKA SERKO, 2014, KA50m backstroke men, 25m course (in 2024 points)   141 79 0 0 0 0   2024(10 yrs)0:42,39 2023(9 yrs)0:51,47 2022(8 yrs)0:51,47 2021(7 yrs)0:51,47 2020(6 yrs)0:51,47 2019(5 yrs)0:51,47