Onyedika was named in the starting line-up by manager Carl Hoefkens.
The 21-year-old was replaced by Colombia midfielder, Eder Balanta in the 74th minute.
He has made six league appearances for the Belgian Pro League champions this season.
In another Belgian Pro League clash, Victor Boniface played his part in Union Saint- Gilloise’s 2-0 win against Gent.
The striker was replaced by Hakan Nilson 16 minutes from time.