Naomi Osaka exited from the first round of the Western & Southern Open in Cincinnati on Tuesday with a 6-4, 7-5 loss to China's Zhang Shuai. Runner-up at the U.S. Open warm-up event two years ago, former world No. 1 Osaka landed 10 aces but otherwise struggled with her first-serve accuracy. Her 21 winners for the match were also outweighed by 29 unforced errors. The four-time Grand Slam winner broke Zhang just once, during a fightback from 5-3 down to 5-5 in the second set, but a string of costly errors enabled her 44th-ranked opponent to break back before serving out the match. The result lev...
