#5 Finn Balor
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Finn Balor could use a bit of a push at the moment. It is clear that fans love him and the WWE booking him in meaningless feuds is doing a lot to hurt the momentum which he had when he got into the WWE.
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From a pure size and power point of view, the odds would not be in favor of Balor posing any threat to Lesnar. However, Balor is a tremendous athlete and could push Lesnar to his limits in a match.
It would be even more thrilling to watch Lesnar having to face Balor's demon persona which has an incredible track record of winning matches for him. This provides a more supernatural element to the feud and would be somewhat reminiscent of the feud which Lesnar had against The Undertaker.
Edited by Ben Roberts