Struggling Naomi Osaka aiming to break slump as Pan Pacific Open returns
Pan Pacific Open this week. The former world number one and four-time Grand Slam champion has plummeted to 48 in the women's tennis world rankings after a wretched run that has seen her crash out in the first round of her last three tournaments. The Japanese 24-year-old has not won a title since last year's Australian Open and has been hampered this season with injury.


