"Always it's hard to take any defeat but especially this one because we were in control of the game," said Benitez.
"I was really surprised because the first half was a one sided game. We made one mistake when we conceded a goal but after Fernando scored we were in control.
"I don't know the percentage of possession we had but it was unbelievable to concede in the first half after controlling everything.
"They were more offensive in the second half and we made a massive mistake when we conceded the second goal. We then had two players sent-off."