Former major league pitcher Tommy Hanson died at age 29 Monday night in an Atlanta hospital after suffering what's been described as "catastrophic organ failure."According to reports, Hanson had been hospitalized since Sunday morning.A former friend and player told the Atlanta Journal-Constitution that Hanson's condition on Monday night was grave. Another former teammate with the Braves, Jordan Schafer, tweeted at 11:06 p.m. "This breaks my heart RIP TH."Hanson once was a top prospect for the Atlanta Braves, and he finished third in the National League Rookie of the Year voting in 2009.Injuries derailed his stay in Atlanta, and he was traded to the Los Angeles Angels in 2012. He spent one year with the Angels.He bounced around the minors in the Chicago White Sox and San Francisco systems in 2014 and made 11 starts with the Sacramento River Cats in 2015 after signing a minor league deal with the Giants in May.“We are incredibly saddened to learn of the tragic and untimely passing of Tommy Hanson,” River Cats President Jeff Savage said Tuesday morning. “Tommy was a leader in this clubhouse and on the field, but more than that, was a favorite among the players. While he spent just the last half of 2015 with us, his presence was felt by all and he will be missed. Our thoughts and prayers are with Tommy’s family, friends, and former teammates.”In 123 career major league games (121 starts), Hanson has a 49-35 record with a 3.80 ERA.