He said: "If I could put my finger on the problem, I'd stop it. Listen, we're working hard. We have played against top-quality teams, but they're games we'd expect to get something from, so it's not an excuse.
"We've had injuries to key players, but that's not an excuse.
"We need to do better. There's not much more I can keep coming out here and saying to you. It's the same things."
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