Orioles pitcherWei-Yin Chen was not happy about with being optioned to Single-A Frederick on Tuesday, and he took to Twitter to make his displeasure known.

I am in excellent physical shape. I feel great and I am ready for my next start. I just pitched 8 innings of shutout baseball.

Wei-Yin Cameron Clark Jerseys Chen (@WeiYinChen16)

I am disappointed my routine is being interrupted. I will continue to work hard and do my best to perform. Thank you for all the support!

Wei-Yin Chen (@WeiYinChen16)

Curtis Martin Jerseys The left-hander had one ofhis best outings of the season just one day earlierwhen he threw eight scorele s innings in a 4-0 shutout ofthe Phillies,loweringhis season ERA to a 2.89.

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Orioles manager Buck Showalter insists the move was intended to preserve Chen for the rest of the season, especially after he complained of fatigue during his June 10 start against the Red Sox. The teamcited"general sorene s" Quincy Williams Jerseys as its reasoning to send Chen to the minors.

"We really didn't like the description of some of the things he was feeling after his start on the 10th," Showalter said, . "He felt a lot better (Monday) night, but we're trying to get ahead of some things with him.We explained the whole thing, and he understands, especially when we've done it with him once or twice."

Chen made two rehab John Franklin-Myers Jerseys starts for Double-A Bowie in 2013 while he was on the disabled list.

Chen will be recalled to the majorswhen his mandatory 10-day minor league se sionfinishes June 26.