Portugal playmaker Deco is doubtful for his team's World Cup opening game against Angola due to injury, BBC Sport reported on Friday. The 28-year-old was forced to withdraw from training after injuring his left foot following a collision with teammate Costinha. The injury comes just one day after Deco left the team's training session following an undisclosed row. Coach Luiz Felipe Scolari will have to wait for the next 12 hours to make his decision on whether he'll name Deco in the starting line-up against Angola or not. Portugal will kick off their World Cup campaign against Angola on June 11th before facing other group D contenders Mexico and Iran.