23-Grand slam Winner, SERENA Williams crashed out of the Miami Open in the first round, slumping to a straight-sets defeat against Japan’s Naomi.

Osaka, who won her first major title in Indian Wells last weekend, was superior throughout and fully deserved her 6-3, 6-2 win in just one hour and 17 minutes.

It was Williams’ fourth match and second tournament appearance since returning from 13 months maternity leave yet the American’s movement and inability to stay in the rallies suggested her comeback could be more arduous than expected.

The defeat was the first time Serena has lost her first match at an American hard court championship for 21 years.

Serena, 36, may have been unfairly unseeded here due to her lack of action over the past year could have no complaints with the defeat.