Tamsyn Manou, an 18 championships titleholder, only took 52.90 seconds in a 400m dash in 1994, 1.94 seconds faster than the preceding year.
Tamsyn Carolyn Manou (nee Lewis, born 20 July 1978) is an Australian track and field athlete and middle-distance runner, who has won a total of eighteen Australian Championships at 400 metres, 800 metres and 400m hurdles. 1993 54.84 1994 52.90 
