The 27-year-old running back crashed into teammate Talanoa Hufanga during Sunday's game against the Seattle Seahawks
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San Francisco 49ers backup running back Trenton Cannon was taken off the field in an ambulance after a scary collision on the opening kickoff in a 30-23 loss at Seattle on Sunday. Cannon was attempting to make a tackle on DeeJay Dallas when his head hit the leg of a teammate. San Francisco’s training staff immediately ran onto the field and stabilized Cannon’s neck.