Belgium laboured to victory in their opening World Cup game as they were pushed all the way by an outstanding effort from Canada.
Canada dominated large portions of this Group F game but were wasteful in front of goal, particularly when Alphonso Davies saw a first-half penalty saved by Belgium keeper Thibaut Courtois.
Courtois also had to save well from Alistair Johnston, but Canada were undone against the run of play on the stroke of half-time when Michy Batshuayi collected Toby Alderweireld's long ball and fired a powerful left-foot finish past Milan Borjan.
Jonathan David wasted a glorious headed chance to draw Canada level and Courtois also saved from Cyle Larin. Canada were also left nursing a sense of injustice after they had two presentable penalty appeals ignored in the first half.
Canada continued to push forward in the second half but it was Roberto Martinez's side who closed out the win, despite a performance that made a mockery of their status as second in the world rankings.
Dismal Belgium ride their luck
Belgium have Canada's poor finishing to thank for the fact they avoided the fate of Argentina and Germany in falling victim to a World Cup shock.
Martinez has presided over Belgium's so-called 'Golden Generation' but this ageing side, on the evidence of this performance, may have left their best days behind them.
Belgium still have glorious talent in the shape of Kevin de Bruyne and a world-class keeper in Courtois but they looked ragged, jaded and desperately vulnerable to the pace and energy of Canada's attacking play.
The time-served defensive duo of Alderweireld, 33, and 35-year-old Jan Vertonghen have served country and clubs outstandingly well, but there was an air of desperation about some of their play as Canada, in the first half particularly, dragged Belgium to all parts. They simply could not cope with the speed and intensity of Canada, an ominous sign for future games.
Belgium can clearly perform much better than this and have main striker Romelu Lukaku to return up front but this was a tired-looking effort and coach Martinez, who is under pressure to bring success to this group having been in charge since 2016, will simply be relieved to come out of this game with three points.