(John G. Mabanglo/EPA)

Tommy Hanson, once considered one of the Atlanta Braves’ top pitching prospects before a shoulder injury and a concussion derailed his career, died Monday at an Atlanta hospital. He was just 29.

According to Zach Klein of WSB-TV in Atlanta, Hanson suffered catastrophic organ failure after being rushed to a different hospital early Sunday morning because he was having trouble breathing. He then lapsed into a coma.

Hanson, a right-hander, pitched five MLB seasons after being taken in the 22nd round of the 2005 amateur draft. He went 11-4 with a 2.89 ERA in his rookie season with the Braves in 2009, when he finished third in NL rookie of the year voting. Hanson finished his career with a 49-35 record and 3.80 ERA in 123 games (121 starts) over five major league seasons, the last spent with the Los Angeles Angels.

Hanson attempted to revive his MLB career in later years with the Texas Rangers, Chicago White Sox and San Francisco Giants, spending time in the minors but never rising past Class AAA.