Serena Williams was knocked out of the Miami Open in the first round by Japanese Naomi Osaka as the 23-time Grand Slam winner continues her return after pregnancy.
The defeat is her second since after the American tennis player gave birth, the first was during the Indian Wells after her return from maternity.
BBC Sport reports that: “Williams, unseeded after taking 13 months off to have her first child, was beaten 6-3 6-2 by the 20-year-old Japanese”.
The American lost serve twice in each set and was unable to break back.
She lost after the Miami Open director said seeding rules for players coming back after maternity leave were a “punishment” and “should be changed”.
Osaka is herself also unseeded but last week claimed her maiden title at Indian Wells to move up to 22 in the world.