Cardinals closer Jordan Hicks opts out of 2020 season due to pre-existing health concerns

As noted by MLB Network insider Jon Heyman and others, the hard-throwing 23-year-old pitcher suffers from Type 1 diabetes and is high-risk for COVID-19:

Hicks underwent Tommy John surgery in June 2019. In May, Cardinals president of baseball operations John Mozeliak told Rick Hummel of the St. Louis Post-Dispatch that the club was hopeful Hicks would be recovered enough to play during a shortened campaign. Hicks previously told The Athletic he was willing to play despite his condition. 

Hicks appeared in 29 games last season before the operation. He tallied a 2-2 record with a 3.14 ERA.