简单摘要内容：
由于右肩的伤未愈，小威决定退出武汉跟北京两项大赛，但会尽力
准备好到新加坡参加年终八强赛。
教练Mouratoglu也表示今年对小威来说想当不顺，只拿到一个满贯
的冠军，另外在两次决赛输球对小威来说不是一个好结果，也不满
意这样的表现。
小威今年目前只参加了八项比赛，拿到两个冠军（罗马及温布敦），
另外拿了三个亚军（澳网输给Kerber，Indian Wells输给Azarenka，
法网输给Muguruza）。
https://goo.gl/pT5ax5
Serena Williams announced today that due to a
continuing shoulder injury she will not compete
in the upcoming Dongfeng Motor Wuhan Open and
the China Open in Beijing.
"I am disappointed that I will not be able to
compete at the Dongfeng Motor Wuhan Open or
the China Open due to continuing issues with
my right shoulder," Williams said in a statement.
"I have been practicing and playing but my
shoulder is still not fit for tournament play."
"I wish the tournaments great success and I'm s
ure the fans will enjoy some great tennis. I
am focused on getting ready to compete at the
WTA Finals in Singapore."
Williams recently told CNN's Ravi Ubha, "I'm
tired of playing tournaments unhealthy and
taking losses that I would never lose."
Williams has played eight tournaments this
year, the fewest she has played in a season
since returning from injury in 2011. She has
won two titles (Rome and Wimbledon) and
finished as runner-up three times - Australian
Open (lost to Angelique Kerber in final),
Indian Wells (lost to Victoria Azarenkain
final) and Roland Garros (lost to Garbiñe
Muguruza in final).
Her coach Patrick Mouratoglu stated in an
interview with CNN, "It's a bad season for
her. She has been a lot injured. For Serena
any other result that is not a title is a
bad result. The final at a Grand Slam is a
bad result for her. We cannot be satisfied
with one Grand Slam [title] and two finals lost."
As Williams seeks time to recover from her
injury, she will look to return to action in
Singapore for theBNP Paribas WTA Finals Singapore
presented by SC Global, an event she has
competed in nine times and won five titles.