Wigan Athletic chairman Dave Whelan has said that he will hold talks with manager Roberto Martinez on Monday after the side lost 2-0 to Swansea City at the DW Stadium.
The Latics, who remain bottom of the Premier League table, have now gone 12 home games without a league win.
"That was our worst performance in four or five years," said Whelan.
"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."
Despite his demand for answers, Whelan has insisted that Martinez's job is safe.
"Roberto Martinez's future is secure," he added. "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."
The Spaniard, who signed a new deal in the summer, took over at Wigan in 2009.
