Asked about alledged stamping by Blues forward Diego Costa, Rodgers told Sky Sports 1: "He's an outstanding player, an outstanding footballer.
"He has this edge to him. With Emre Can, that was poor, I felt. He could easily hurdle over the young player and he directs his studs right on to his ankle, which could've been nasty.
"And again the one with Martin Skrtel. There's no need to do it. That's the sad thing of it.
"He's a top-class player and he's clever enough that the officials don't see it.
"It was poor from him. He doesn't need to do it. It wasn't good for the game.
"The referee didn't see it. When you see it afterwards, it's disappointing."
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