Head made 27 appearances for the Rays this past season, two of them starts. He was 2-0 with a 2.31 ERA in 35 innings, striking out 32, allowing 21 hits and walking nine. Opponents batted .175 against Head, who hadn't made any appearances in the majors before 2021.
The 31-year-old was drafted in the 18th round by Cleveland in 2012.
The Marlins made room for Head on their 40-man roster by designating outfielder Brian Miller for assignment.