by Brendan Bradford - Lying motionless on the turf at AMI Stadium in Christchurch, Chiefs openside flanker Tevita Koloamatangi summed up the agony of his side. Having been replaced earlier in the match, Koloamatangi returned when Brodie Retallick and Ben Afeaki failed concussion tests and were forced from the game midway through the second half. The 25-year-old back-rower lasted less than 10 minutes before debilitating cramps left him prostrate on the ten meter line with 15-minutes to play and his team battling to defend an 11-7 lead. In his first game on New Zealand soil since the 2011 World Cup, Mils Muliaina had already left the field with a shoulder complaint and halfback Augustine Pulu was on one leg following a first half collision. By the time Koloamatangi was helped from the pitch, big Ben Tameifuna had returned and repla