Krul's shot was blocked in a crowded area, only for referee Howard Webb to blow for full-time instead of a penalty.
Tim Krul: "In my opinion it was a penalty.
"I controlled it on my chest and his arms were up in the air.
"Sometimes it's difficult for the referee to see it but that's when you need his assistants to help him a little bit and unfortunately it didn't fall for us.
"He told us it was very close and he thought his hands were by his side, but they weren't.
"His arms were up in the air and in my opinion it was a penalty."