Two-times Grand Slam champion Naomi Osaka has sacked her second coach in seven months, splitting with Jermaine Jenkins in the wake of her disappointing U.S. Open title defense.
Jenkins, a long-time hitting partner of Venus Williams, replaced Sascha Bajin in February, weeks after Osaka’s Australian Open triumph.
“I’m super grateful for the time we spent together and the things I learned on and off the court but I feel like now is an appropriate time for change,” the Japanese 21-year-old wrote on Twitter.
“Appreciate you, forever warmed by you … Thank you for everything, it was a blast.”
Top seed at Flushing Meadows, former world number one Osaka struggled with a knee problem before being upset by 13th seed Belinda Bencic in straight sets in the fourth round.