ANDERSON, Ind. -- Indianapolis Colts running back Vick Ballard has suffered a torn left Achilles tendon, a source told ESPN senior NFL analyst Chris Mortensen.

Ballard was scheduled to undergo an MRI after suffering a left leg injury in practice Friday. He left the practice field on a golf cart.

"When you see someone like Vick Ballard go down who's worked so hard to get back, it's tough, but it happens," Colts owner Jim Irsay said. "As soon as you get to camp, those things happen. He's still young, and he's got a full career ahead of him, so we have to do an MRI and see exactly what it is and then go from there. But you really hope to not hear any of that kind of news."
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