But Belgium fans will have watched in horror as Hazard, showing great form lately, limped off in the 70th minute.
His teammates later dispelled any fears of lasting damage to the diminutive Chelsea forward.
"I'm not too worried about Eden, he's a tough guy. He gets kicked all the time, but soon gets over it," said Lukaku after the game.
Coach Roberto Martinez's multi-talented Red Devils were just too much for Costa Rica, who opened brightly and even took the lead through Brian Ruiz with a slick finish after some early pressure from the visitors.
The giant Manchester United target man got his second with a powerful header after running into space with great speed.
He then set up strike partner Michy Batshuayi for the fourth and the pair did a little dance to celebrate.
(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)