Eden Hazard has admitted that Belgium failed to perform during their narrow win over Russia at the World Cup on Sunday.
The Belgians were in danger of being held to a goalless draw in Rio de Janeiro before Divock Origi found the net late on to send them through to the last 16.
"We didn't play well, apart from the last 10 minutes. The subs brought a bit of freshness, but perhaps the Russian defence was also pretty tired by then," Hazard told FIFA.com.
"Personally speaking, I feel good. I've been trying to make a difference, and often I end up doing that at the end of matches – that proves that I feel fresh."
Belgium play their final fixture in Group H on Thursday when they take on South Korea.
