Freiman officially announced his retirement from professional baseball Saturday on Twitter.

Freiman was released by the Nationals organization on Thursday, Kevin Brown of ESPN reports.

The Nationals acquired Freiman from the Braves in exchange for Tyler Moore on Sunday.

Freiman signed with the Braves on Wednesday, Matt Eddy of Baseball America reports.

Freiman was released by the Athletics on Wednesday, Joe Stiglich of CSN California reports.

Freiman cleared waivers Sunday and was outrighted to Triple-A Nashville, Susan Slusser of the San Francisco Chronicle reports.

Freiman was designated for assignment Thursday.

The 27-year-old doesn't play every day, but should be in the lineup for this favorable matchup. He's batting .233 with four homers and 12 RBI in 60 at-bats this season.

Nate Freiman went 1-for-2 with a double and walk as the A's topped the Blue Jays 4-1 Thursday in a game played under official protest of Oakland skipper Bob Melvin. The drama began in the second inning, when Anthony Gose grounded to Freiman with the bases loaded and one out. Freiman attempted to tag Munenori Kawasaki as he ran from first to second -- first-base umpire Vic Carapazza signaled a missed tag -- and then threw to Stephen Vogt for a force at home. Blue Jays manager John Gibbons won a challenge of the ruling that Kawasaki had been tagged, making Edwin Encarnacion safe at home since the force play no longer was in effect. Melvin lodged a formal complaint which was relayed up to the press box. Fortunately, the run didn't affect the outcome of the game.

Nate Freiman went 3-for-4 with a three-run home run in Sunday's win over the Marlins. With the A's having just tied the game at 1-1 in the sixth inning, Freiman blasted a three-run off of Andrew Heaney and it turned out to be just enough for the A's, who won 4-3. Not a bad season debut for the 27-year-old. The Athletics should give him plenty of opportunities to face left-handed pitching while he's up.