Martes, who pitches in the Houston Astros organization, tested positive for Boldenone, according to MLB.
Martes, 24, was suspended in March 2019 for 80 games following a positive test for the banned performance-enhancing drug Clomiphene.
He made his MLB debut in June 2017. He was 5-2 with a 5.80 ERA in four starts and 28 relief appearances for the Astros, striking out 69 and walking 31 in 54 1/3 innings.
Martes made four starts for Triple-A Fresno in 2018, hurt his elbow and had Tommy John surgery later in the summer. He made three minor league starts in 2019.
#Astros Francis Martes suspended 162 games for using performance enhancing substance. Martes last pitched in majors in 2017.— Greg Bailey (@GregBailey13) February 17, 2020