Tennis-膝 傷害 puts Osaka's U.S. Open 肩書を与える defence in 疑問
Aug 16 (Reuters) - World number one Naomi Osaka will "probably" defend her U.S. Open 肩書を与える, even if it means 反抗するing her doctor's orders, she said after retiring from the Cincinnati Masters with a 膝 傷害 on Friday.
Osaka was 追跡するing American Sofia Kenin in the third 始める，決める of their ４半期/4分の1-final in Cincinnati when she sought 治療 on her ひどく-strapped left 膝.
After 簡潔に returning to play, the Japanese 星／主役にする retired with Kenin 主要な 6-4 1-6 2-0.
Osaka's 撤退 comes after Serena Williams, the woman she （警官の）巡回区域，受持ち区域 in a tumultuous final at 紅潮／摘発するing Meadows last year, pulled out of Cincinnati with 支援する problems.
The 傷害 has also 緩和するd Osaka's 支配する on the 最高の，を越す 最高位の, with world number two Ash Barty 均衡を保った to 埋め立てる it if the Australian makes the final.
"I really don't know what's going on with my 脚 権利 now," Osaka told reporters.
"It sucks, 特に since I didn't want to get 負傷させるd this の近くに to the Open, and now I'm 肉親，親類d of worried a little bit.
"The thing is, my 苦痛 寛容 is really high, so that's usually why I play through things that 明らかに I shouldn't."
Osaka said she "felt it wasn't 安全な" to continue against Kenin ahead of the U.S. Open starting Monday week.
"I feel like this might have that one パーセント chance of me not 存在 able to play, and that's what's 関心ing me.
"In the end, I'm going to play even if the doctor says no, probably."
Osaka's 退職 sent Kenin through to 直面する fellow American Madison 重要なs in Saturday's 半分-final.
重要なs 直面するd only two break points in （警官の）巡回区域，受持ち区域ing Venus Williams 6-2 6-3 in the evening 遭遇（する）.
Barty will 直面する ロシアの 退役軍人 Svetlana Kuznetsova in the other 半分-final after 決起大会／結集させるing to a 5-7 6-2 6-0 victory over Greek Maria Sakkari.
The Australian had 殺到するd to a 4-1 lead in the first 始める，決める before she つまずくd with unforced errors, with Sakkari 解除するing to take 支配（する）／統制する through a slew of b ackhand 勝利者s.
Barty cleaned up her game in the second 始める，決める, however, 回復するing the backhand slice that had 砂漠d her in the opener.
"It was important for me at the start of the second 始める，決める to go 支援する to basics and what worked before," the 23-year-old Barty said.
"I had to serve 井戸／弁護士席, and not give her too many looks at second serves. I tried to bring in my slice to change the 速度 of the match."
Kuznetsova outlasted Czech third seed Karolina Pliskova 3-6 7-6(2) 6-3, having been a 始める，決める 負かす／撃墜する with her 対抗者 serving for the match. (報告（する）／憶測ing by 遺伝子 Cherry in Raleigh, North Carolina. 付加 報告（する）／憶測ing by Andrew Both and Rory Carroll. editing by Pritha Sarkar/ Ian 身代金)
