Unless I'm mistaken, and please let me know if I am, Pacquiao has a contract with HBO and Mayweather has a contract with Showtime. They actually can't fight without breaching their contracts. Plus, frankly, I'm tired of hearing about that fight. It's dead.

I'm pretty sure GGG is contracted with HBO too for that matter. So, let's scratch him off the list.

For Mayweather's potential foes at or around his weight class, Andrade at 154, Garcia at 140, Quillin at 160, and the Khan/Brook winner at 147. If Thurman could beat a credible opponent at 147, I'd move him into the 147 slot too, but he hasn't faced anyone worth mentioning yet.