The Washington Times - June 10, 2011, 06:18PM

SAN DIEGO — The Nationals officially placed right-hander Cole Kimball on the 15-day disabled list with right shoulder inflammation this afternoon and purchased the contract of right-hander Ryan Mattheus from Triple-A Syracuse. No 40-man roster move was needed because the Nationals had 39 guys on their 40-man.

One night after Nationals manager Jim Riggleman expressed disappointment with his relievers inability to come out of the bullpen and throw strikes (Nationals relievers combined for five walks in a 7-3 loss to the Padres Thursday night), the Nationals are bringing in new blood to their bullpen. The Padres, who have the second-worst offense in the National League (second only to Washington) had scored as many seven runs in a game at home only two other times this season.

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Mattheus has never pitched in the major leagues but he has been tearing it up at Triple-A as a reliever. He allowed four earned runs in 14 2/3 innings pitched with Double-A Harrisburg earlier this year but since being promoted to Triple-A, he’s thrown 10 scoreless innings, struck out 10 and allowed just three hits. He has 28 strikeouts and eight walks between Double-A and Triple-A this year.

Mattheus was part of the trade that sent Joe Beimel to the Colorado Rockies in July of 2009. He was a 19th round pick of the Rockies in the 2003 draft and underwent elbow ligament-replacement surgery just before the Nationals acquired him. He was a participant in the MLB Futures game in 2008.