Baltimore Ravens cornerback Tray Walker was involved in a serious motorbike accident in Liberty City, Florida, on Thursday night, and is in critical condition at Miami's Jackson Memorial Hospital, a team spokesman said.
Ravens vice president of public relations Kevin Byrne couldn't confirm the extent of Walker's injuries.
"Oh my God, this is devastating news," coach John Harbaugh said. "Our prayers and hopes are with Tray and his family tonight."
Walker, 24, was a fourth-round pick of the Ravens in 2015. He played only eight snaps on defense as a rookie, making one tackle.