Japan have carefully managed their players' physical condition through the World Cup group stage and will come into their round-of-16 clash against Belgium with plenty left in the tank, coach Akira Nishino said Sunday.On the eve of the match at Rostov Arena, the Samurai Blue boss said he had learned from the national team's past two forays into the knockout stage, when Japan squads laboring under fatigue were eliminated in the last 16."In (2002 and 2010), Japan had fantastic performances in the group stage and progressed to the round of 16 in both cases, but...the team members were all exha…READ FULL ARTICLE