Japanese veteran Kimiko Date-Krumm has become the oldest woman in professional tennis to win a singles match at the Australian Open.

The 42-year-old upset Russian 12th seed Nadia Petrova 6-2 6-0 in the first round at Melbourne Park on Tuesday.

A former world No.4, Date-Krumm is 42 years and 109 days old - more than two years senior to the previous oldest woman to win a match at the Open, Briton Virginia Wade in 1985.

The 100th-ranked Date-Krumm, who reached the Australian Open semi-finals back in 1994, will next play either Israeli Shahar Peer or Russian Alexandra Panova on Thursday for a place in the last 32.