Swimmer Srihari Nataraj clocked a personal best of 54.07 seconds to win gold in the men`s 100 metres backstroke in the Uzbekistan Open Summer Swimming Championships in Tashkent on Thursday. However, his performance was slower than the Olympic `A` qualification time of 53.85 seconds.

Earlier, in the preliminary round of the men`s 100m, the 19-year-old Nataraj had clocked 54.10 seconds. Though he bettered his performance in the final, it wasn`t good enough for the Olympic `A` qualification mark.