On the pitch , 28 teams will battle it out in a total of 71 matches with defending champions Fiji looking to repeat their recent success at the Japan Sevens . Hong Kong is the social showpiece of the Rugby Sevens World Series . The rugby tournament has been running for four decades . Fiji has won the tournament for the past four years .
Hong Kong is the social showpiece of the Rugby Sevens World Series . The rugby tournament has been running for four decades . Fiji has won the tournament for the past four years .