Baltimore Ravens star Tray Walker critical after crash

Baltimore Ravens cornerback Tray Walker is in a critical condition after he was involved in a motorbike crash in Miami.

Miami-Dade Police say Walker was riding a Honda dirt bike with no lights and wearing dark clothing when he collided with a Ford Escape on Thursday evening.

The Ravens say Walker is at Jackson Memorial Hospital. Police are investigating.

Walker was selected in the fourth round of the 2015 NFL draft. He played in eight games last season, mostly on special teams.

In a statement, Ravens coach John Harbaugh said: "This is devastating news. Our prayers and hopes are with Tray and his family tonight."

Walker attended Miami Northwestern High School before playing in college at Texas Southern.