Belgium coach, Marc Wilmots, commended his team's patience after they came from behind to defeat Algeria 2-1 in Group H on Tuesday.
Though Algeria took a first-half lead from a Sofiane Feghouli penalty kick, the Belgians worked their way back into the match and scored two goals in the final 20 minutes to secure a victory.
"This was a difficult game against a team that always moves backwards," Wilmots said afterwards, according to Sky Sports.
"We made a very small mistake, but that is punished at a World Cup. You then have to show patience and we did.
"During the second half, we have shown our mental strength with this young group. The squad has made all the difference."
Wilmots' team will next clash with Fabio Capello's Russia on June 22 at 18:00, hoping to distance their lead at the top of the group.
"What is important now is three points. First we have to recover and then put the focus on the next game against Russia," Wilmots added.
"We will be looking to continue to build on this momentum."
Historically, Belgium has never lost a match against Russia, South Korea or Algeria, its three Group H opponents, boasting six victories and three draws overall.
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