Jared Mortensen made 8 starts with the Stone Crabs spanned across the 2013 and 2014 seasons. He was 4-1 with a 2.25 ERA in 11 games pitched for the Stone Crabs. Mortensen made his professional debut with the Stone Crabs on August 17, 2013 against the Palm Beach Cardinals in which he pitched 2 scoreless innings in a 2 inning outing.
Mortensen was signed to a minor league contract by the Rays in 2013. He was pitching with the Grand Prairie Air Hogs of the independent American Association before being signed by the Rays.