Parnell, 29, suffered a partially torn UCL that was discovered after his only 2014 regular season appearance on March 31st at Citi Field.
It was initially expected that Parnell would complete two weeks of prescribed rest before attempting a four week throwing program in an effort to avoid surgery.
However, Parnell abandoned that effort two days ago after discussing the matter with his family.
Most pitchers who undergo Tommy John surgery are able to return to game action within 12 months.
The above fact was the main reason – according to reports – why Parnell opted for surgery instead of rehab.
Parnell wanted to get the procedure done as soon as possible in an effort to not miss any of the 2015 regular season, which is his walk-year.
Get well soon, Bobby.