The Phillies announced today that they have designated right-hander Dustin McGowan for assignment and recalled left-hander Jake Diekman from Triple-A Lehigh Valley.
The 33-year-old McGowan has already been outrighted off the 40-man roster once this season but remained with the organization after he cleared waivers. He’ll have the option o elect free agency once again, if he is ultimately exposed to waivers and clears for a second time. The veteran swingman has struggled with his control this season, leading to a 6.94 ERA in 23 1/3 innings. McGowan’s 21 strikeouts in that time are a solid mark, but he’s also walked 20 hitters, and his ground-ball rate is down significantly from its peak — a trend that began last year in Toronto and has continued in 2015.