王適嫻
Chinese player Sun Yu has commented on Yamaguchi's style, pointing out that while small, she is diligent and runs swiftly, and she is capable of picking up the kinds of difficult shots that others are typically unable to save. Sun Yu suggested that her style of play is based upon patience and consistent performance, observing that she does not make mistakes often, and simultaneously takes advantage to score from opponents who rush and make errors. Another Chinese player, Wang Shixian, agrees that Yamaguchi is quick and nimble, and for challengers to be successful, they need to be capable of matching her speed.