Kaylee McKeown continued her excellent form, swimming the fifth fastest 50 metres backstroke of all time to win the Australian Open Championships on Friday, where Ariarne Titmus also impressed. The 22-year-old had already set Australian records in both the 200 and 400 metres individual medleys in the last two days, and swam 27.07 seconds in the 50 metre backstroke to set a new all-comers record, the fastest time ever recorded in Australia. McKeown, the reigning Olympic 100 and 200m backstroke