The Athletics have released right-hander Simon Castro from their Triple-A club, per the Pacific Coast League’s transactions page. The 30-year-old turned in a solid year with the Oakland organization in 2017 but had gotten off to a rough start in 2018.
Originally signed by the Padres as an 18-year-old, Castro was flipped to the White Sox as the centerpiece in 2011’s Carlos Quentin trade. At the time, he ranked among the game’s top 100 prospects, but ultimately he didn’t establish himself with either organization. After being cut loose by the Sox, he spent two years with the Rockies before landing with the A’s on a minor league deal prior to the 2017 season.
Castro logged a career-high 38 innings with the A’s in the Majors last year, pitching to a 4.38 ERA with 8.5 K/9, 3.4 BB/9 and a 32.7 percent ground-ball rate in that time. He posted gaudy strikeout totals with Oakland’s top affiliate in Nashville as well, continuing a recent trend at the Triple-A level. While Castro has limited big league experience, his past three Triple-A campaigns (2015-17) saw him work 148 1/3 innings of 3.52 ERA ball with 11.8 K/9, 3.2 BB/9 and 0.85 HR/9.
This season, he’s whiffed 12 hitters in 8 1/3 innings but also issued six walks and yielded seven earned runs. Castro has a fairly lengthy track record of missing bats in the upper minors and only turned 30 last month, so he’s likely to catch on as a depth piece elsewhere.