Ravens' Harbaugh pens moving open letter to team after Walker's life-threatening injury

On Thursday night, Baltimore Ravens cornerback Tray Walker sustained life-threatening injuries in a motorbike accident in Southeast Florida, requiring a lengthy surgery at Jackson Memorial Hospital in Miami.

The Ravens organization is praying for the Miami-born 23-year-old, a 2015 fourth-round draft pick by the team, to pull through.

"It sounds like the doctors are doing everything they can to try to preserve his life," Walker's agent Ron Butler said. "A tough 24 hours. The family is all here."

Harbaugh