The Athletics have claimed righty Marcus Walden off waivers from the Blue Jays and optioned him to Triple-A, the club announced. Walden was designated yesterday, and presumably hit the waiver wire immediately. Walden, 25, has worked mostly as a starter in the minors, but had been throwing in relief at Triple-A to start the 2014 campaign. At Double-A last year, he worked to a 3.71 ERA in 162 1/3 innings, with 4.9 K/9 against 2.8 BB/9. Toronto paid the cost of losing Walden's rights after some odd roster maneuvering. The club opened the year with Jeremy Jeffress on the active...

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