Ganassi: Decision to retire leaves IndyCar star Dario Franchitti "heartbroken"

FILE - In this Oct. 10, 2009, file photo, IRL driver Dario Franchitti celebrates after winning the Firestone Indy 300 auto race at the Homestead-Miami International Speedway in Homestead, Fla. The three-time Indianapolis 500 winner said Thursday, Nov. 14, 2013, that doctors have told him he can no longer race because of injuries sustained in an IndyCar crash last month. He fractured his spine, broke his right ankle and suffered a concussion in the Oct. 6 crash at Houston. (AP Photo/J Pat Carter, File) (The Associated Press)

FILE- In this May 27, 2012, file photo, IndyCar driver Dario Franchitti, center, of Scotland, celebrates with his crew after winning the Indianapolis 500 auto race at the Indianapolis Motor Speedway in Indianapolis. The three-time Indianapolis 500 winner said Thursday, Nov. 14, 2013, that doctors have told him he can no longer race because of injuries sustained in an IndyCar crash last month. He fractured his spine, broke his right ankle and suffered a concussion in the Oct. 6 crash at Houston. (AP Photo/Darron Cummings, File) (The Associated Press)

When Dario Franchitti made a rare phone call from Scotland to his boss, Chip Ganassi knew immediately something was off with the driver.

He could hear the heartbreak in Franchitti's voice and quickly asked him what was wrong.

Franchitti delivered the difficult news: Doctors had told him it was too dangerous to continue racing because of injuries sustained in a crash last month. The three-time Indianapolis 500 winner was reluctantly retiring.

Ganassi said Franchitti will recover completely from his injuries, which included a fractured back, broken ankle and a concussion. Ganassi said the threat of another concussion put Franchitti at too great a risk to continue racing.

Now the team owner begins a search for a new driver for the iconic No. 10 Target car.