Peter Gammons talks about guys who have been put on waivers since the trade deadline...
Teixeira, Blalock and Mike Young were all put on waivers by the Rangers. Teixeira was claimed and pulled back, Blalock and Young were not claimed, but as Gammons points out, none of those guys were going anywhere anyway...
Most interestingly, though, is that Alfonso Soriano has not yet been put on waivers. My guess is that the Rangers are still talking trade regarding Soriano, and want to wait until they have a team interested and willing to deal for him before they put him on there. That way, that club can put in a waiver claim, and the deal can be consummated without anyone worrying that someone ahead of them on the waiver priority list will block the deal.