Efe Ambrose
The clash at PPL Park saw late chances fall to Greece's Georgios Samaras and Nigeria's Efe Ambrose, team-mates at Scottish champions Celtic for the past two seasons, but neither man could make his opening count.
Greece start their Group C campaign against Colombia on June 14, before tackling Japan and Ivory Coast, while Nigeria will feature in Group F with Argentina, Bosnia-Herzegovina and Iran.