Paul Onuachu continued to score goals for fun in Belgium after he netted his 22nd goal of the season as Genk piled on pressure on leaders and champions Club Brugge with a 3-2 win against Zulte-Waregem.
Onuachu has now more than doubled his tally of last season.
He is now six goals clear of his closest rival.
Onuachu opened scoring for the home team in first half stoppage time, before he doubled their advantage seven minutes after the restart.
Genk are now nine points behind table toppers Club Brugge after 24 matches.