Cowboys center Travis Frederick announces retirement
Cowboys star Travis Frederick retires at 29: 'I faced a struggle'
Cowboys' Frederick Retires, Cites Play After Nerve Disorder – NBC
Former Cowboys star Travis Frederick addresses retirement, chance
While Surprising, Frederick's Retirement Shouldn't Hurt Cowboys
Cowboys Pro-Bowl C Travis Frederick announces retirement
2019 Northwestern State Football Media Guide by Northwestern State
Film room: 2 positions the Cowboys need to improve in 2020
Cowboys' All-Pro center Travis Frederick retires at 29 after nerve
Cowboys' All-Pro center Travis Frederick retires at 29 after nerve