MLB: Who should pursue Trevor Rosenthal this offseason?
Even though Rosenthal expects to miss most of 2018, signing him would be a creative and beneficial move for the 2019 season.
Trevor Rosenthal is one of the most peculiar free agents available. He has proven himself as a solid closer with his 45 and 48 save seasons in 2014 and 2015 for the St. Louis Cardinals, but he had a troubled year in 2016 and finished with a career-worst in ERA (4.46), FIP (3.72), and xFIP (3.74). Injuries led to a shortened 2017 for Rosenthal, including undergoing Tommy John surgery in August.
Because of rehab, Rosenthal expects to miss most if not all the 2018 season. Since the Cardinals only had one more year of control over him, the team released him to avoid paying him while he rehabbed before he joined another team. Any team can pursue Rosenthal, and some major league teams could especially benefit from gambling now by paying him a small amount in 2018 to guarantee his services when he returns in 2019.