Six months later, at the 2000 Summer Olympics in Sydney, Dafni competed again in the same events by achieving FINA B-standards of 4:17.36 (400 m freestyle) and 4:50.50 (400 m individual medley) from the Janet Evans Invitational in Los Angeles. She placed twentieth in the 400 m individual medley (4:53.52) and twenty-second in the 400 m freestyle (4:16.94, her lifetime best).
