Who am I!

I have had a good run, in the last 5 rounds, I have beaten 3 Champions, drew a fourth Champion, and beaten a contender. Who am I? (list the opponents if you know them)

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2011 is an expert rating, you appear to be American and you're named after a zoo animal.  You're also exhibiting a smidgeon of narcissism, expecting total strangers to click through to your games and identify your opponents.  Beyond that, I have no idea who you are and I don't f-ing care.

'Who am I' is a game where you guess the famous person based on the clues. I honestly thought the game had been around in one form or another forever (I remember playing as a kid). I guess not, I mean if an inciteful (pun intended) retired judge couldnt see that, it wasn't clear.

world champions! of chess even!

Think old school if that helps.

Sure, 20th century. He was active from the 30's to the early 50's.

Your close, but it wasnt Keres.

Sammy!

Nope, not Sammy. Guessing all around him. See if this helps, he beat Botvinnik, Euwe, Alekhine and drew Capa, Flohr was the contender he beat.

reuben fine

https://en.wikipedia.org/wiki/AVRO_1938_chess_tournament

We have a winner! Interestingly in an equally strong tournament (Nottingham 36) he didnt lose a game (though more draws). But you have to admit, that would have been one helluva 5 game streak!

he was definitely a fine player

All right, same idea guess the famous person.

'I am the first Asian chess master, and won two different national championships'

Nope 'master' was deliberate, though he probably played at GM strength.