What exactly would be the gamble? The worst thing that happens is you get Soriano for nothing but what is left on his contract the rest of the season. Giving up talent for a month rental. You don't have to give up talent to make the claim. The claim costs a nominal amount of money. It's no risk. As soon as someone claims him, the Nationals will withdraw him and try to arrange a trade (which is where you would have to give up something.). Again, you don't have to trade for him if you claim him. There is no risk to putting in the claim. Correct me if I'm wrong, but if the Nationals really didn't want him, couldn't they just tell the team that claims him "hey, you can have him" and then the team that claims him would have to pick up his contract? I remember Manny Ramirez being placed on, and clearing waivers a couple years ago because nobody wanted to risk having to pick up his contract.