Not sure, probably still Petrosyan, but it"s useless. Now Buakaw can"t be even mentioned anymore in a 4-man tournament!
Petrosyan, Marat, Sittichai and none maybe? Well, I would rather make Marat against Petrosyan, and then Petrosyan vs. Sittichai. Of course, if Petro takes it. Superbon after embarrassed himself against Semeleer and Marat, was KOed also in his previous fight against Sittichai....
I would have enjoyed Petrosyan, Marat, Sittichai and Yod at some time! And at some time Petrosyan, Sittichai, Buakaw and Yod!