Yunel Escobar has been traded to the Washington Nationals from the Oakland A's, per Jon Heyman on Twitter.
Escobar had been acquired last week by the A's as part of the deal that brought Ben Zobrist to Oakland, and sent Daniel Robertson, Boog Powell and John Jaso to the Tampa Bay Rays.
The Nationals have Ian Desmond at shortstop, so I'm not entirely sure why they would be getting Escobar, unless they are anticipating moving Desmond -- a free agent after the 2015 season -- in another deal.
More info on this as it becomes available...
UPDATE -- Reportedly, Tyler Clippard is going to Oakland in this deal, pending physicals.