Cotton, who will turn 29 years old in January, hasn’t pitched in the Majors since he underwent Tommy John surgery in March 2018. The righty has recorded a 4.95 ERA over 29 starts in two big league seasons, including a 2.15 mark over five starts in his debut year with the A’s.
Traded to the Cubs for cash in November 2019, Cotton was part of Chicago’s initial 60-man player pool this past season. The team released him in September.
Ramos, meanwhile, has posted a 3.71 ERA over four seasons, all with the Phillies. He signed a Minor League deal with the Dodgers last December but never pitched for the club.
Martin appeared in seven games with the Pirates this past season, going 0-for-9 with two walks. The 25-year-old owns a .539 OPS in 51 plate appearances at the MLB level.