Super Bowl XIII 21–17, in Super Bowl X), and both teams were attempting to be the first club to ever win a third Super Bowl. Dallas was also the defending Super Bowl XII champion, and finished the 1978 regular season with a 12–4 record, and posted playoff victories over the Atlanta Falcons and the Los Angeles Rams. Pittsburgh entered the game after posting a 14–2 regular season record and playoff wins over the Denver Broncos and the Houston Oilers. Steelers quarterback Terry Bradshaw, who was named Super Bowl MVP, completed 17 out of 30 passes for Super Bowl records of 318 passing yards
Super Bowl XII their Super Bowl V loss to the Baltimore Colts, 16–13. The next year, Staubach won the starting job and eventually led Dallas to defeat the Miami Dolphins in Super Bowl VI, 24–3. Staubach was also named Super Bowl MVP during that game. In 1972, Morton started most of the Cowboys' games as Staubach was out with a separated shoulder. However, in the division playoffs against San Francisco, Staubach relieved Morton and led the team to a come-from-behind victory, which assured Staubach of the starting job going forward. Morton was relegated to backup status until he left the team in 1974