Russian fourth seed Elena Dementieva survived an early scare to reach the Australian Open fourth round with a 7-6 (8/6), 6-4 win over unseeded hometown favourite Samantha Stosur today.

The victory took Dementieva's winning streak this year to 13 and proved lucky for the Russian as a string of Stosur mistakes let her off the hook when she trailed 5-2 in the first set.