The 1973 Sugar Bowl, part of the 1973 bowl game season, took place on December 31, 1973, at Tulane Stadium in New Orleans, Louisiana. The top-ranked Alabama Crimson Tide of the Southeastern Conference (SEC) met the independent Notre Dame Fighting Irish; both teams were undefeated.^[3][4][5]

Underdog Notre Dame won 24–23;^[3][4][6] the game received a 25.3 Nielsen rating, making it one of the highest-rated college football games in history.^[7]

With a cold rain falling, Notre Dame opened the scoring with a Wayne Bullock 6-yard touchdown run, and after a missed extra point took an early 6–0 lead.^[11] In the second quarter, Alabama took the lead on a 6-yard Randy Billingsley touchdown run, only to see the Irish go up 14–7 on the following play. The ensuing kickoff was returned 93-yards for a touchdown by Al Hunter.^[11] The Tide cut the lead to 14–10 late in the quarter on a 39-yard Bill Davis field goal.^[11]

In the third quarter, the teams traded touchdowns with Alabama scoring first on a 5-yard Wilbur Jackson touchdown run and Notre Dame on a 12-yard Eric Penick touchdown run to make the score 21–17 entering the final period.^[11] After quarterback Richard Todd made a 25-yard touchdown reception from Mike Stock on a trick play, Davis missed the extra point to only put Alabama up 23–21.^[11] The Irish responded with a 19-yard field goal by Bob Thomas to take the lead 24–23 with 4:26 remaining in the game.^[11]

Late in the fourth quarter, Alabama pinned Notre Dame back deep in Irish territory with a punt, hoping to get the ball back within easy range of a game-winning field goal. During the punt, the Alabama punter was run into and Notre Dame was flagged with a 15-yard roughing the kicker personal foul. In 1973, a personal foul wasn't an automatic first down in college football, so since it occurred on a 4th and 20, accepting the penalty would have given Alabama a fourth and 5 on their own 45 yard line, only down one with mere minutes remaining. Coach Bear Bryant, knowing even a safety would win the game, decided to decline the penalty and try to stop Notre Dame who had to start on their own 1 yard line. Bryant's strategy seemed ready to pay off when his defense stymied Notre Dame on two plays and forced 3rd and 10 on their 1-yard line. However, on third and long Irish QB Tom Clements connected with backup TE Robin Weber on a long pass that gave the Irish a first down and allowed them to run out the clock. With their victory, the Associated Press awarded the Irish the national championship in ranking them first in their final poll.^[12]

Alabama and Notre Dame would play for the national championship again in 2012, where the Crimson Tide exacted revenge on the Fighting Irish in a blowout victory to repeat as national champions.