It truly comes as no surprise across the league that the Dallas Cowboys generate their success from their offensive line. In 2016, The Cowboys wheeled out an offense that featured two rookie starters at two of the most important positions. Dak Prescott and Ezekiel Elliott excelled tremendously and a large reason for their success is because of the offensive line.
After the 2016 season, the Cowboys lost Ronald Leary to free agency and Doug Free to retirement. Despite the two players being more of the afterthoughts on the offensive line, it was clear in 2017 that their presences were missed.