Preston Wilson went from Colorado to Nationals' 25-man roster. Wilson started in center field and hit a home run in his first at-bat for the team on Thursday in Milwaukee. He will be the regular centerfielder with Brad Wilkerson moving to first until Nick Johnson recovers from his heel injury.
Zach Day went from the Nationals DL to the Rockies' 25-man roster. Day was slated to make a rehab start in AAA New Orleans on Sunday; Colorado has not yet announced a start for Day nor have they indicated that he will pitch out of the bullpen.
Mike Stanton went from free agency to the Nationals' 25-man roster. The Yankees had designated him for assignment, meaning that they offered him as trade bait. When nobody bit, he became a free agent and the Nationals landed him.
Junior Spivey went from Nationals' 25-man roster to 15-day DL. He's a candidate to move to the 60-day DL should the Nationals identify a player they want to move on to the 40-man roster. The fluke injury he suffered over the weekend, breaking his wrist while batting off of a tee, will keep him out a minimum of 8 weeks.
Ryan Church went from the 15-day DL to the 25-man roster. His neck and ribs area are still sore from when he hit the wall to make a game-saving catch in Pittsburgh in June, but he's as ready as he'll ever be this season. He should start in left field against right-handed pitchers until Johnson heals; after that, Wilkerson will move to left and what happens to his playing time then is anyone's guess.
Tony Blanco went from the Nationals'25-man roster to the 15-day DL. He's suffering from "vertigo associated with a sinus infection." Blanco was batting .250 in 39 games and hasn't appeared in a game since June 15. To give you some perspective, that was the night after Frank Robinson and Mike Soscia got into it in Anaheim.
Matt Cepicky went from the Nationals' 25-man roster to AAA New Orleans. He enjoyed a nice cup of coffee up in the bigs, going 5-18 with three doubles and three RBI in seven games with the Nationals. It's a good bet that we'll see him again in September, if not sooner.
Henry Mateo went from the 15-day DL to the 60-day DL. They needed to do this to create a spot on the 40-man roster as they had added Wilson and Stanton to it and had subtracted only Day.
J. J. Davis went from New Orleans to the Colorado Springs Sky Sox, the Rockies' AAA affiliate. After spending the first month of the season as a reserve with the Nationals, he was hitting .282 with 12 home runs for the Zephyrs. It appeared that the Nationals outfield was crowded enough throughout the organization to make him expendable.
Dee Brown moved from AA Harrisburg to New Orleans. He was batting .194 with the Senators since being signed by the organization in late May. It's unclear why Brown got the callup and the other Dee in Harrisburg, Haynes, remains in AA despite being the same age as Brown and possessing a batting average that's about 175 points higher than the now-Zephyr.
Larry Broadway moved from a rehab assignment with the Gulf Coast League Nationals to Harrisburg's roster. He is considered to be one of the organization's top prospects, but he struggled to start the season with a .193 average in New Orleans before going on their DL on May 5 with a knee injury.
Jason Norderum was sent down from Harrisburg to A Potomac. He was 3-3 with a 4.60 ERA for the Senators.