US veteran women's tennis player Serena Williams' coach Patrick Moratoglou believes that Serena's strategy is no longer effective, so she needs to change her strategy. Serena had lost to Wang Qiang of China in the third round of the first Grand Slam Australian Open of the year and missed the record to win her 24th Grand Slam title.

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Moratoglou told the media, "We have to accept that our strategy is not working. We have to face the truth. But she is positive and she can come back." He said, "She believes that she can come back and I believe the same. She is not far away, but we have to change some things."

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"Maybe she can make a comeback in a different way, with a different strategy, and a different goal. She thinks positively, but she also thinks negatively because she failed when she didn't win a Grand Slam."

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