According to several reports this afternoon, (the first I saw by the Washington Times' Amanda Comak) the Washington Nationals have purchased the contract of RHP Ryan Mattheus from Triple-A Syracuse. No corresponding move has been announced.
Mattheus, a 6'3'', 27-year-old Colorado Rockies' '03 19th Round pick, was acquired by Nationals along w/ RHP Robinson Fabian in a July '09 trade for LHP Joe Beimel, after Mattheus had undergone Tommy John surgery. In 22 games and 24.2 IP between Double-A Harrisburg and Triple-A Syracuse this season, the Galt, California-born pitcher has a (2-1) record, 1.46 ERA, eight walks (2.92 BB/9) and 28 K's (10.22 K/9).
The Harrisburg Senators (@HBGSenators) announced on Twitter this afternoon that Sens' RHP Ryan Tatusko, who was acquired in a deadline deal last year that sent IF Cristian Guzman, had been promoted to Triple-A while RHP Pat Lehman was moved from Class-A Potomac to Double-A. Tatusko, 26, has moved back and forth between the rotation and the bullpen this year, compiling a (2-4) record in 12 games, 9 starts and 47.0 IP in which he's walked 26 (4.98 BB/9) and K'd 40 (7.66 K/9). Lehman, 24, a 13th Round pick in 2009, is (2-0) in 13 games, 12 appearances, walking no one and striking out 11 (6.32 K/9) in 15.2 IP.
The Nationals also announced that Ryan Zimmerman, who's been rehabbing in the system but has the night off on Friday, will join the Triple-A Chiefs this weekend as he continues to work his way back from a torn abdominal muscle.