Baltimore Ravens cornerback Tray Walker died at 5 p.m. Friday from injuries sustained in a motorbike accident Thursday night, according to his agent. He was 23 years old.

Walker, a fourth-round draft pick out of Texas Southern in 2015, suffered significant head injuries when his dirt bike collided with an SUV just before 8 p.m. Thursday. The accident happened not far from where Walker went to high school in Miami.

Walker was taken to Jackson Memorial Hospital in Miami and spent much of Thursday night in surgery, said his agent, Ronald Butler.

The accident remains under investigation.

According to Detective Dan Ferrin, a spokesman for the Miami-Dade Police Department, Walker was driving his dirt bike west on Northwest 75th Street when he collided at an intersection with a Ford Escape traveling south on Northwest 21st Avenue. Police said Walker was not wearing a helmet.

Walker’s dirt bike did not have headlights, Ferrin said.

Detective Alvaro Zabaleta said Friday that Walker was “wearing dark clothing, which may have been a factor.”

Walker played in eight games with the Ravens as a rookie, making one tackle and seeing most of his action on special teams. He dedicated his first NFL season to his father, Tommy Lee Walker, who passed away from a heart attack in November 2014.

Despite being on the same high school team as future NFL first-rounders Teddy Bridgewater and Amari Cooper, Walker’s only scholarship offer was to Texas Southern, which plays in the Southwestern Athletic Conference.

Walker had nine career interceptions in college but didn’t get an invitation to the NFL scouting combine. However, Walker made an impression on NFL teams in regional combines and private workouts.

The Ravens loved his raw skills and the fact that he was 6-foot-2, 199 pounds, good size for an outside cornerback. When Baltimore drafted him 136th overall, Ravens Coach John Harbaugh said another team was prepared to take Walker soon after the Ravens did.

His rookie season essentially amounted to a redshirt year. Walker acknowledged that the pace of the game and the length of the season were significant challenges in his transition the NFL.

As Ravens players packed up after the season ended, Walker vowed to come back strong for his second NFL season. He was expected to compete for a reserve cornerback role.

“It was just a learning step for me,” Walker said in early January. “There was a lot for me to learn and accomplish throughout the season, adjusting to the length of the season as well as studying the game. At some points, it was (frustrating). But I just used that as an edge for me. Just learn from that and just hope and wish that I come back strong for next year, and (am) able to get on the field and make the plays that they want me to make.”

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