The A’s announced Thursday that they’ve released veteran right-handed reliever Santiago Casilla, whom they’d recently designated for assignment.
The 37-year-old Casilla had a solid surface-level ERA, pitching to a 3.16 mark through 31 1/3 innings of relief. However, he’s issued 20 walks, hit four batters and thrown four wild pitches in that time while striking out just 22 hitters. The righty’s 92.9 mph average fastball velocity was the lowest mark of his career, and his nine percent swinging-strike rate is his lowest full-season mark as well.
Casilla is earning $6MM in 2018 — the second season of a two-year, $11MM free-agent deal he signed with the A’s in the 2016-17 offseason. He’s still owed about $2.35MM of that sum through season’s end. As a free agent, he’ll be able to sign with any club, and a new team would only owe him the pro-rated portion of the league minimum through season’s end. The Oakland organization will remain on the hook for the rest of that salary.
While the 2018 season hasn’t been a good one for Casilla, he pitched to a 2.66 ERA with much better marks of 8.4 K/9 against 3.5 BB/9 in 435 2/3 innings between San Francisco and Oakland from 2010-17.