Roberto Martinez will consider launching an appeal against the red card which cost Wigan any chance of a positive result at Newcastle.
The Latics found themselves facing an uphill task within 12 minutes after defender Maynor Figueroa was dismissed. Honduras international Figueroa was shown a straight red card for a challenge on striker Papiss Cisse which also resulted in a penalty from which Demba Ba fired the home side into a lead they never surrendered.
But Martinez said: "We will look into it. The red card obviously has to be because he is stopping a clear goalscoring opportunity. It's difficult to see how a striker is going to score a goal if the ball is divided between two players."
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