Naomi Osaka beats Serena Williams in controversial US Open final

Naomi Osaka became Japan's first Grand Slam singles champion after she thumped Serena Williams 6-2 6-4 in a controversial U.S. Open final on Saturday, with the American suffering a mesmerizing meltdown after being handed a code violation. It was drama-filled conclusion to a final that was rich with storylines but will now go down as one of the most controversial Grand Slam finals of all time. (Source: Robert Deutsch-USA TODAY Sports)