He played college football for the Youngstown State Penguins and was selected by the Los Angeles Rams in the second round of the 1973 NFL draft.

At Youngstown State, he showcased his skills as a quarterback for a pass-oriented offense, earning a selection in the Senior Bowl.

Jaworski was named the third-string quarterback, backing up John Hadl and James Harris, and only appeared in a total of five games through his first two seasons.

Entering the playoffs, there was speculation as to whether James Harris was healed enough to return or if Jaworski would start for the divisional round game against the St. Louis Cardinals.

Jaworski started the next week against the New Orleans Saints, but he was benched for Haden in the fourth quarter after completing just 3 of 11 passes for 15 yards.

In March 1977, Jaworski was traded by the Rams to the Philadelphia Eagles in exchange for former All-Pro tight end Charle Young.

In 1978, Jaworski led the Eagles to a 9–7 record, clinching both a wild card spot and the franchise's first postseason appearance in 18 years.

In the Wild Card game against the Atlanta Falcons, Jaworski helped the Eagles jump to a 13–0 lead that they would hold into the fourth quarter.

As of 2024, this Falcons-Eagles playoff game is believed to be first and only time in NFL history where both starting quarterbacks were of Polish heritage.

In frigid conditions at Veterans Stadium, the Eagles pulled off a strong rushing attack as they went on to defeat the Cowboys 20–7, advancing to their first ever Super Bowl in franchise history.

However, the Eagles went 3–5 in the second half of the season, but still clinched a wild card spot for their fourth consecutive playoff appearance.

Following the season, Eagles head coach Dick Vermeil retired, and was replaced by defensive coordinator Marion Campbell.

In 1984, Jaworski led the Eagles to a 5–7–1 record before he suffered a broken left leg in Week 13 against his former team, the Los Angeles Rams.

However, after a poor performance in Jaworski's return from his leg injury in the 1985 season opener, he was benched and replaced by Randall Cunningham for Week 2.

In a Week 10 game against the Atlanta Falcons, he tied an NFL record with a game-winning, 99-yard touchdown pass in overtime to Mike Quick.

At the end of the 1985 season, head coach Marion Campbell was fired and was replaced by former Chicago Bears defensive coordinator Buddy Ryan.

Jaworski led the Eagles to a 2–4 start before he was sidelined due to an elbow injury he suffered just before a Week 7 game against the Dallas Cowboys.

Following the 1989 season, Jaworski contemplated retirement, and he was seen as a potential candidate to replace James Florio in the United States House of Representatives.

In 2006, Jaworski worked a game as a color commentator with Brad Nessler and Dick Vermeil during the opening-night doubleheader of Monday Night Football.

The next season, Jaworski was selected to replace Joe Theismann as a full-time color commentator for Monday Night Football, where he would work alongside Mike Tirico and Tony Kornheiser.

Following the 2011 season, ESPN announced that the Monday Night Football broadcast team would be reduced to just Tirico and Gruden.

With the departures Bon Jovi and Sambora as co-owners, Jaworski now served as a majority owner of the team alongside Craig Spencer, who was with the previous ownership group.

After the 2019 season, however, the league folded, and the Philadelphia Soul, Albany Empire, and Atlantic City Blackjacks each shut down.

The book highlights seven games in NFL history which greatly changed the strategies and tactics used in professional football.

Other prominent investors in the league included Brandon Chillar, Mike Ditka, Michael Irvin, Mark Wahlberg, and Kurt Warner.