who has Nick ever beat,no one just a bunch of cans, he has zero wins against big names except for BJ Penn who is a light weight and 4-5 years over his prime, everyone else is no name who no one has ever heard of and now he fights GSP, this is a joke.
To be fair, while Nick's resume might seem mediocre, there is MMA outside of the UFC (although most folks wouldn't care to look into it).
Here are a few other guys Nick has defeated that while not as remotely popular as a GSP, are both seasoned and well-known fighters in the world of MMA:
Chris Lytle - One of the veterans of the sport, now at the age of 38 he is retired, but had a solid record against top fighters.
Robbie Lawler (20-9) - A solid fighter with many good fights under his belt.
Josh Neer (33-13) - Everyone knows Josh and he isn't a walk in the park come fight time.
Gleison Tibau (26-9) - Part of American top team with a killer guard and some wicked submission capacity.
Frank Shamrock (23-10) - Frank is a solid fighter and unlike his brother, he doesn't believe in taking a fall.
Hayato Sakurai (37-12) - Solid fighter.
Paul Daley (31-12) - Was one of the most talented fighters in Strikeforce.
BJ Penn - The legend.
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P.S. I still believe this fight will go to GSP, but I don't underestimate Diaz. While I don't think Diaz is a superb fighter (because he is not), he does have solid JiuJitsu and a boxing technique that very few in the UFC can compare with. GSP is just a more complete fighter that knows how to utilize all the tools he brings to the octagon.