Wigan manager Roberto Martinez says Ashley Williams is "not a nasty footballer" after the Swansea defender came in for criticism after striking Robin van Persie with a ball hit from close range.
The Manchester United forward was lying on the ground following a foul when Williams kicked the ball into the back of his head during Sunday's Barclays Premier League match at the Liberty Stadium. United manager Sir Alex Ferguson said Van Persie was "lucky to be alive" after the incident in the 74th minute of the 1-1 draw.
Martinez, who managed Swansea before joining the Latics in 2009, does not believe Williams acted out of malicious intent, and said: "I signed Ashley Williams for Swansea and I know his character inside out. I can guarantee you without even looking at the incident that he is not a nasty footballer."
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