Tray Walker (1992--2016)

Baltimore Ravens cornerback Tray Walker, 23, died last Friday of head injuries a day after colliding with an SUV while riding a dirt bike in Miami. Police said Walker was operating a bike with no lights and was not wearing a helmet. A promising prospect drafted by the Ravens in 2015, Walker was a fourth-round pick out of Texas Southern. He played in eight games last season, mostly on special teams. Walker made just one tackle but left an imprint on his teammates and coaches. "He had so much potential and was on his way to being a great NFL player," defensive backs coach Chris Hewitt said in a statement. "He will be missed and will never be forgotten."

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G. NEWMAN LOWRANCE/AP (WALKER)