Tony Pulis has questioned the red cards awarded to Claudio Yacob and Jack Grealish in West Bromwich Albion's FA Cup loss to Aston Villa.
Both players received two yellow cards in the latter stages as the Midlands derby finished 10 a side.
Goals from Fabian Delph and Scott Sinclair sent sent Villa through to the semi-finals.
"That's not a sending off," Pulis told reporters when questioned about Yacob.
"Yac has had three touches before he blows up. I thought the linesman had said something but I have spoken to [referee] Anthony [Taylor] and he has made the decision.
"I don't know what Grealish got sent off for, I was amazed when he showed him the red card."
West Brom are back in Premier League action next weekend when they welcome Stoke City to The Hawthorns.
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