Scrumhalf Cam Roigard and flyhalf Damian McKenzie scored two tries each and made a strong bid for first-team roles as New Zealand beat Namibia 71-3 in the Rugby World Cup on Friday. Roigard had his double inside the first seven minutes of his World Cup debut and provided assists in first-half tries by McKenzie and Leicester Fainga’anuku, and in the second half to David Havili. The All Blacks scored 11 tries in all.