Hardly really fair on the three you mentioned. Oscar was on a collision course with Tszyu, when Tszyu blew it by being knocked out by Phillips. One can't blame an ambitious young Oscar for skipping a fighter with no belt and a devastating recent KO defeat.
Mosley jumped two weight divisions to fight his old mate Oscar for a fortune, for a belt. Can't fault that. Pacquiao did the same.
Mayweather only became a champion at 140lbs the same month Tszyu lost his belt to Hatton, so it wasn't like there was an overlap.
If I'm honest, all three are a country mile above anybody Tszyu fought, and I can't help but feel he would have been exposed against those three. I sometimes wonder if Tszyu knew it himself, which is why he cleaned up at 140lbs, when 147lbs was brimming with talent and dollars. Big fish, small pond.
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