The Astros have added another option to their rotation for next season after agreeing on a one-year deal with free agent RHP Doug Fister, the team annonced.
Fister, 31, was with the Washington Nationals the last two seasons. He was 5-7 with a 4.19 ERA last year after a 16-6, 2.41 performance in 2014.
For his career, he is 65-63 with a 3.42 ERA with stops at Detroit and Washington.