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A’s send Jarrod Parker to minors

Right-hander Jarrod Parker was sent to the minors Monday, shortly after allowing seven walks in the A’s 6-5 victory over the Arizona Diamondbacks.

“It’s pretty obvious I need to fine-tune some things,” Parker said while packing his belongings inside the clubhouse at Phoenix Municipal Stadium.

Parker is rated the A’s top pitching prospect by Baseball America, and his raw stuff received rave reviews from within the organization during camp. He entered Monday with a 1-1 record and 2.45 ERA in three spring starts, with nine strikeouts but also six walks in 7 1/3 innings.

He lost his handle on the strike zone Monday – though he allowed just two runs – and he admitted he was trying a little too hard against his former team. The A’s acquired Parker from the Diamondbacks as the centerpiece of the Trevor Cahill trade in December.

With Parker out of the mix and Brad Peacock also having struggled, the A’s starting rotation could go Brandon McCarthy, Bartolo Colon, Tom Milone, Tyson Ross and Graham Godfrey.

A’s manager Bob Melvin hasn’t announced his starters beyond McCarthy and Colon.

Joe Stiglich