The killer instinct that carried Japan's Naomi Osaka to a first Grand Slam title evaporated as she hugged her idol Serena Williams after beating her in a controversial US Open final. Osaka said it wasn't the ire of the Arthur Ashe Stadium crowd – angered at penalties meted out to Williams – but just the realisation that she'd robbed the US great who inspired her career of a record-equalling 24th Grand Slam title.

"I know that she really wanted to have the 24th Grand Slam," said Osaka, who choked up again herself trying to explain her feelings. "When I step onto the court, I feel like a different person, right? I'm not a Serena fan. I'm just a tennis player playing another tennis player. "But then when I hugged her at the net I felt like a little kid again."