Travis Frederick retires from NFL: Cowboys have ready-made options to replace the All-Pro center in 2020
Former Cowboys player Marcus Spears on Cowboys and Dak Prescott negotiations - “this ain't normal” - Blogging The Boys
Former Dallas Cowboys Star Travis Frederick Next Goal? Bigger than Sports - FanNation Dallas Cowboys News, Analysis and More
NFL Preview 2020: 20 Storylines You Should Be Following – Riker's Block
Possible replacements for retired Cowboys center Travis Frederic
Former Cowboys player Marcus Spears on Cowboys and Dak Prescott negotiations - “this ain't normal” - Blogging The Boys
Dak Prescott's Extension Will Change Everything We Think About Him - The Ringer
Cowboys Pro-Bowl C Travis Frederick announces retirement
Cowboys news: Tyler Biadasz noted as a player who has the potential to be the steal of the draft - Blogging The Boys
Playoff-Bound Cowboys + Zeke + Lee Wisdom
Cowboys' Frederick Retires, Cites Play After Nerve Disorder – NBC 5 Dallas-Fort Worth