Answer: Tommy Hanson
Tommy Hanson burst onto the scene with Atlanta as one of their highly-touted prospects in 2009. He immediately had great results, racking up the strikeouts and innings from 2009-2012 with Atlanta. His best year came in 2010 when he threw over 200 innings and compiled a 3.33 ERA, 3.30 FIP, and 3.7 fWAR.
Hanson continued to be a solid starter until a shoulder injury derailed his upward career trajectory. Sadly a couple years after his baseball career was done, Hanson passed away at the young age of 29 years-old in November of 2015.