Mariners acquired 1B/OF Michael Morse from the Nationals in a three-team trade.
The deal, which will send John Jaso to Oakland and A.J. Cole, Blake Treinen and a player to be named later to Washington, is now official. Morse, of course, began his career with the Mariners and now will play every day at a corner outfield spot. The 30-year-old has batted .297/.343/.515 with 49 homers over the last two years for Washington.