Portugal's Cristiano Ronaldo during the match vs Latvia on Sunday and Belgium's Romelu Lukaku celebrates a goal vs Estonia. Pics/AFP

Paris: Belgium hammered Estonia 8-1 to go clear in Group H, while Cristiano Ronaldo scored twice as Portugal survived a scare before overcoming Latvia 4-1 in World Cup qualifying on Sunday. There were braces from Romelu Lukaku and Dries Mertens as Belgium ran rampant with further goals from Thomas Meunier, Eden Hazard, Yannick Carrasco and an own goal to make it four wins from four.