Which fighter in their prime would you take from time to challenge a current champ?
Me.. its a hard choice.
Prime Wanderlei Vs A.Silva maybe?
2006 crocop vs cain sounds fun. more so than fedor for some reason
I dont know but prime frank shamrock vs shogun sounds good 
Prime saku vs whoever, I just wanna see prime saku again.
Same with genki
If I had a time machine I'd be to busy winning every Powerball to worry about such trivial things!
prime abbot vs cain!!!
I'd take Kimbo to UFC 1 to see how well he could do.
Then I'd take Melvin Manhoef to UFC 1 also.
Also BJ Penn and Jose Aldo to UFC 1.
Fuck throw Urijah Faber in at UFC 1 too.
All the above at different times of course.
I'd say all of the above would win too.
None would go for that payday.
I'd be your dad