Japan won the 2017 Asia Rugby Championship on Saturday when they finished their campaign unbeaten following a 16-0 win over Hong Kong.On a wet day at the Hong Kong Football Club, the Brave Blossoms won their 25th title out of a possible 30 and their 10th straight since it became an annual tournament.But it was hardly a performance that will worry the sides drawn this week with Japan at the 2019 Rugby World Cup.Once again the improvements made by Hong Kong under coach Leigh Jones were one reason for the tightness of the game in which Amanaki Lotoahea scored the only try."It's been a tough to…READ FULL ARTICLE