Groningen defender Maikel Kieftenbeld admits he was given a bath by Ryo Miyaichi in defeat to Feyenoord.
The on-loan Arsenal attacker was outstanding in the 5-1 victory.
"We tried to force him inside, but he always found a way to get out wide and use his pace," said Kieftenbeld. "He is very dangerous.
"He is very, very difficult to mark. I was not the first, and I will not be the last, to suffer against him."
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