Onuachu scored a second straight brace for Genk to now go four points clear at the top of the Belgian league table after a 3-1 win at closest rivals Antwerp today.
The big question before this first vs second clash was who can stop Onuachu.
Onuachu answered that with a goal in either half to take his tally this season to eight goals.
He doubled the visitors lead in the 33rd minute, before he made it 3-1 on 77 minutes.
Genk now have 37 points from 14 matches, while Antwerp, who paraded Alhassan Yusuf for the entire game, are on 33 points.