In truth, undisputed has traditionally meant WBC, WBA & IBF. Naseem Hamed won each one at 126 AND the WBO but was stripped of belts for unifying. I think he deserves to be called the first even though he didn't technically hold all of them at the same time. He didn't lose to Barrera until he had won all four. I would say historically the first time the WBO was mentioned universally on par with the other three was the "Undisputed" fight between Hopkins and De La Hoya. At 160, Hopkins beat Mercado (IBF), then Holmes (WBC), then Trinidad (WBA). Years later he unified with De La Hoya (WBO), who won a garbage decision against Sturm who was holder. Then Taylor beat Hopkins to obtain all four belts. By the time he lost to Pavlik, Taylor had already been stripped of the IBF and WBA, so Pavlik can't claim having held all four belts. Calzaghe won them all at 168 (WBO over Eubank, IBF over Lacy, WBC/WBA over Kessler)...but like Hamed, he was stripped of the IBF before the Kessler fight I believe.
Here on ESB the WBO is taken more seriously than the WBA at the moment, I had a poll on the alphabets here a while ago. :deal http://www.eastsideboxing.com/forum/showthread.php?t=224787
I concidered that, but I made it multi option and if you read a lot of the comments it didn't look good for the WBA.
They are all jokes anyway. I sometimes wonder if they consider how silly they look when they make all these stupid decisions. Do they realise everyone is laughing at them?
Isnt to surprising when you consider the things they are doing at heavyweight with chagaev valuev ruiz and now haye. The many robberies, the stuff that is going on at 160. Wba is crap nowadays.
Hamed rightfully won all of them but the WBA, WBC, IBF wanted to marginalize the WBO but Hamed stayed loyal. He beat: Tom Johnson- IBF and lineal Cesar Soto- WBC Wilfredo Vazquez- WBA all while holding the WBO he won by beating Steve Robinso