I really don't think Pavlik is unbeatable. He managed to get two very close wins over Jermain Taylor, a fighter who his last 4 out of 5 previous opponents could claim they beat him as well.
I think Abraham would be a tough fight for Kelly. He'd probably start favourite but Abraham has never been KTFO by anyone even when his jaw was hanging from his face.
It's a tough fight imo.
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