Long struck his first goal for Hull in their 1-1 draw with Tottenham.
"I've played against him numerous times and he's a rat," said Davies. "He really is that annoying, the way he runs everywhere. I like Shane, but he is a pain. He's like Paul Dickov used to be, constantly running, constantly working.
"He does not give you an inch. Then, when he gets a chance he shows he's not just a runner. He can finish, as he proved with his goal."
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