UPDATE: It’s done. The Nationals just announced that prospect left-hander Robbie Ray will also be sent to Detroit. So it’s Fister for Ray, Krol, and Lombardozzi. Interesting.

Ray has really improved his stock as a prospect over the past year, but it’s surprising that the Nationals were able to acquire Fister without giving up a more significant piece. Put differently, many GMs are probably kicking themselves for not calling the Tigers.

8:28 p.m. ET: Bob Nightengale of USA Today reports that the Nationals are expected to send infielder Steve Lombardozzi, left-handed reliever Ian Krol, and a prospect to the Tigers in exchange for Fister. We don’t know who the prospect is yet, but the return feels a little light at the moment.

7:58 p.m. ET: We have a significant trade on our hands here, as Chris Cotillo of MLB Daily Dish is reporting that the Nationals have acquired right-hander Doug Fister from the Tigers. FOX Sports’ Ken Rosenthal confirms that the deal is done. No yet word on who is headed back to Detroit, but there will likely be other familiar names involved. Drew Storen could be a logical part of a return package, though that’s just speculation.

The Tigers have talked about giving left-hander Drew Smyly a shot in the starting rotation next season, so the club was expected to field trade offers for their starters this offseason. However, most expected that Rick Porcello would be the odd man out, especially after the Prince Fielder trade cleared salary for a potential contract extension for Max Scherzer. Fister is arbitration-eligible for the second time this winter after posting a 3.67 ERA and 159/44 K/BB ratio over 208 1/3 innings this past season. MLB Trade Rumors projected his salary to rise to rise to $6.9 million in 2014.

Fister is set to move from one impressive starting rotation to the next. He’ll join Stephen Strasburg, Jordan Zimmermann, Gio Gonzalez, and Ross Detwiler in Washington.

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