Osaka claims U.S. Open title after Serena meltdown

Sept 8, 2018; New York, NY, USA; Naomi Osaka of Japan kisses the U.S. Open trophy after beating Serena Williams of the USA in the women’s final on day thirteen of the 2018 U.S. Open tennis tournament at USTA Billie Jean King National Tennis Center. Mandatory Credit: Robert Deutsch-USA TODAY Sports

NEW YORK (Reuters) - Naomi Osaka became Japan's first Grand Slam singles champion by thumping Serena Williams 6-2 6-4 in a controversial U.S. Open final on Saturday in which the American suffering a mesmerizing meltdown after being given a code violation.

It was drama-filled conclusion to a match rich with storylines that will go down as one of the most controversial Grand Slam finals of all time.