0 Japan Open / Kei Nishikori October 4, 2015 by Christian Deverille · Published October 4, 2015 Japan Open ATP 500 What the Trophy Would Mean Nishikori Wawrinka Dimitrov TweetThe Japan Open features one of the most competitive fields on the tour at an ATP 500 event this season. The Tennis Review looks at the potential Champions, what obstacles they have to overcome,...