Former world number one Serena Williams must rethink her approach to grand slams after her latest bid to win a record-equaling 24th major prize came unstuck at Melbourne Park.

That’s the word from her coach Patrick Mouratoglou .

The 38-year-old American, who is looking to match Australian great Margaret court’s record, has reached four grand slam finals since giving birth to daughter Olympia in 2017 but failed to win any of them.

She arrived at this year’s Australian open having won the Auckland classic title but was beaten by china’s Wang Qiang in the third round.

Mouratoglou said time was not on Williams’ side in the pursuit of the record.