Which fight was a fighter at their best? Against which opponent did a fighter have their best performance?
ex.
Randy Couture: Chuck Liddell 1 (Sylvia and Gonzaga are arguable as well though)
Cro Cop: Barnett 3 in the OWGP finals
Chuck: UFC 52 against randy
Fedor: Pride 25 body blow against nog. Fedor would have beaten any HW in history that night.
BJ Penn: Matt hughes 1, although his wins over Diego and Florian when he was trained by Marinovich is arguable.
Shogun: When he beat Overeem and ARona in one night, winning the 2005 MWGP. We have never seen a better shogun.
Brock UFC 100
but that may be a poor example
UGCTT_ShanTheMan - Brock UFC 100
but that may be a poor example
That's a good example. He beat the shit out of Frank Mir that night.
BJ Penn vs Diego Sanchez 
IAmNotImpressedbyYourStocktonSlap - BJ Penn vs Diego Sanchez
Read op after I posted, so I'll change it to Anthony Pettis vs Benson Henderson 2. Anthony looked amazing that night. Completely outclassed Benson.
Matt Hughes: Frank Trigg 2, though his fights with Carlos Newton are arguable as well.
GSP vs BJ 2
Sorry Melvin. 
Rampage when he beat Henderson.
Great cardio,tight boxing and sharp wrestling for all 5 rounds.
Yeah I know there was no big KO or anything like that like we saw in some of his other fights,but THAT was the best Rampage I ever saw.
Henderson looked great also that night.
Randy Couture vs Big Tim
brody3316 -Randy Couture vs Big Tim
Read the OP, Einstein. I think Randy vs. Chuck 1 was Randy's best performance but his fight against Tim was up there too.
Ken Shamrock Ultimate Ultimate 2
Was a beast vs Johnston
Ken Shamrock Ultimate Ultimate 2
Was a beast vs Johnston
voorhees - Rampage when he beat Henderson.
Great cardio,tight boxing and sharp wrestling for all 5 rounds.
Yeah I know there was no big KO or anything like that like we saw in some of his other fights,but THAT was the best Rampage I ever saw.
Henderson looked great also that night.
Rampage against Henderson was definitely a great performance. His fights against Chuck 1 and 2 were excellent and his third fight against Wanderlei were arguable as well.
Cerrone vs Stephens
Which came after nate looked his best against him
Which came after his previous best against gomi
SuPeRkEwL ELECTRIC bleu -voorhees - Rampage when he beat Henderson.
Great cardio,tight boxing and sharp wrestling for all 5 rounds.
Yeah I know there was no big KO or anything like that like we saw in some of his other fights,but THAT was the best Rampage I ever saw.
Henderson looked great also that night.
Rampage against Henderson was definitely a great performance. His fights against Chuck 1 and 2 were excellent and his third fight against Wanderlei were arguable as well.
Now that I think about it.The way he completely stonewalled ALL of Randlemans takedown attempts and smashed him was awfully impressive.
Still think he was the most complete and prepared vs. his best opponent ever in Henderson though...
Anderson and Forrest. You knew there was a gap in skill level and that Silva was going to most likely win, but I was stunned with how foolish he made Forrest look.
Ludwig against Goulet
voorhees -SuPeRkEwL ELECTRIC bleu -voorhees - Rampage when he beat Henderson.
Great cardio,tight boxing and sharp wrestling for all 5 rounds.
Yeah I know there was no big KO or anything like that like we saw in some of his other fights,but THAT was the best Rampage I ever saw.
Henderson looked great also that night.
Rampage against Henderson was definitely a great performance. His fights against Chuck 1 and 2 were excellent and his third fight against Wanderlei were arguable as well.
Now that I think about it.The way he completely stonewalled ALL of Randlemans takedown attempts and smashed him was awfully impressive.
Still think he was the most complete and prepared vs. his best opponent ever in Henderson though...
He did look great against Randleman.
Kid Salami - Anderson and Forrest. You knew there was a gap in skill level and that Silva was going to most likely win, but I was stunned with how foolish he made Forrest look.
I thought Forrest had a good chance of upsetting Anderson going into that fight.
SuPeRkEwL ELECTRIC bleu -Kid Salami - Anderson and Forrest. You knew there was a gap in skill level and that Silva was going to most likely win, but I was stunned with how foolish he made Forrest look.
I thought Forrest had a good chance of upsetting Anderson going into that fight.
Really?Why?
Cuz he was bigger?
No other reason to think that.
I gave Bonnar a better chance simply cuz he had better jujitsu than Forrest.
But still none.