Tommy Hanson, who spent four of his five MLB seasons with the Atlanta Braves, has died at the age of 29.

Hanson fell into a coma on Monday and was transferred to Piedmont Hospital in Atlanta, according to Atlanta television station WSB, which first reported the death.

No details were given about the cause of his ailment, which reportedly began Sunday morning when he had trouble breathing and was rushed to a hospital.

Hanson's friends and former team-mates were reportedly told, "It's real bad" and that Hanson suffered catastrophic organ failure.

Hanson made his MLB debut with the Braves in 2009 and remained with the team through the 2012 season.

Following a trade to the Los Angeles Angels in November 2012, Hanson had a 4-3 record with a 5.42 ERA in 15 appearances with 13 starts in 2013. Hanson had minor league stints with the Texas Rangers, Chicago White Sox and San Francisco Giants over the last two years. 

Known for his ability to keep hitters off balance, Hanson had a fastball that topped out in the low 90s with a 70-mph changeup and a slider in the low 80s. His most effective pitch was a nasty curveball that had a 38-percent whiff rate.

Born in Tulsa, Hanson was raised in San Bernardino County, Calif. He was a 22nd-round draft pick of the Braves in 2005 out of Riverside Community College, making his professional debut a year later with the Danville Braves of the Appalachian League.

The Braves had such high hopes for Hanson, they released future Hall of Famer Tom Glavine to make room for Hanson on the roster. 

After going 11-4 as a rookie in 2009, Hanson finished third in voting for the National League Rookie of the Year award. His best game may have come in 2011 when he struck out 14 Houston Astros batters on June 12 at Minute Maid Park. Hanson was named the opening day starter for the Braves in 2012, but was placed on the disabled list with a lower back strain. It was a nagging shoulder injury that eventually derailed his career.

Hanson had a 49-35 record with a 3.80 ERA and 648 strikeouts over 708 innings during his five-year MLB career. Hanson's stepbrother died in 2013 at the age of 24.