Dodgers add Fabio Castillo to 40-man roster

LOS ANGELES — The Dodgers added pitcher Fabio Castillo to the 40-man roster on Thursday, to avoid losing the right-hander.

Castillo was added to the 40-man roster and optioned to Triple-A Oklahoma City, for whom he started the second game of a doubleheader on Wednesday night. Castillo, 28, pitched part of his 2016 with Hanwha of the Korean Baseball Organization. He received interest from a team overseas, which triggered an opt-out clause in his minor league contract.

Castillo has a 3.27 ERA in 44 innings in 2017 between Oklahoma City and Double-A Tulsa, with 41 strikeouts and 13 walks. He was in big league camp during spring training with the Dodgers as a non-roster invitee.

To make room on the 40-man roster for Castillo, the Dodgers designated left-handed pitcher Justin Marks for assignment. Marks, who was claimed off waivers from the Rays on May 9, had a 4.50 ERA in nine relief appearances for Oklahoma City, with 11 strikeouts and four walks in 10 innings.