The Latics have now gone 12 home games without a win and remain anchored to the foot of the Barclays Premier League.
Dave Whelan: "That was our worst performance in four or five years.
"I will have a meeting with him on Monday morning and ask him some questions about the performance and his selection.
"We had three quality players on the bench and I want to know why.
"Roberto Martinez's future is secure.
"He has done a great job for the club.
"But we will have a meeting on Monday when he will put his cards on the table and I will do the same."