BELO HORIZONTE, Brazil - Super subs Marouane Fellaini and Dries Mertens have rescued World Cup dark horses Belgium in a come-from-behind 2-1 win over Algeria.
Algeria had taken a 25th-minute lead from a penalty by Sofiane Feghouli after he had been hauled down by Jan Vertonghen.
But Fellaini, who has endured a goalless season with Manchester United, levelled with a powerful header in the 70th minute.
Ten minutes later, Mertens buried the second goal to give Belgium a winning start in a Group H which also includes Russia and South Korea.
Algeria stunned the fancied Belgians after Tottenham's Jan Vertonghen wrestled livewire Valencia striker Sofiane Feghouli to the ground.
Vertonghen was yellow-carded while Feghouli held his nerve to tuck a confident penalty beyond Thibaut Courtois in the Belgium goal.
It was Algeria's first World Cup goal since 1986.
Belgium were poor in the first half and had to wait until the end of the first half for their first serious attempt on goal when Nacer Chadli was put clean through by Eden Hazard.
But Chadli's effort was well-saved by Rais M'bolhi.
Belgium coach Marc Wilmots, who has never lost a competitive fixture as national team coach, took off the sluggish Romelu Lukaku.