More than 700 games and three Super Bowls later, here's a look at some of the most memorable victories the blue and green have come up with in four decades of pro football in the Pacific northwest.
Oct. 29, 1979: Seahawks 31, Falcons 28
The Seahawks win in their Monday Night Football debut, after falling behind 14-0.
Seattle gets within a touchdown when Jim Zorn runs 34 yards for a score on a fourth-down play. The Seahawks then recover an onside kick, and Zorn eventually hits Sherman Smith from four yards out to tie the game. Zorn also completes a 20-yard pass to placekicker Efren Herrera off of a fake field-goal attempt, something that got even Howard Cosell excited, while Dan Doornink rushes for 126 yards and two TDs.
Seattle has the highest winning percentage in Monday Night Football history to date, having gone 21-8 (.742) in 29 appearances through the 2014 regular season.
Dec. 18, 1988: Seahawks 43, Raiders 37
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The Seahawks win their first-ever AFC West title by besting the divisional-rival Los Angeles Raiders in California.
Dave Krieg throws for 410 yards and four TDs in completing 19 of 32 passes, while John L. Williams catches seven passes for 180 yards and a score out of the backfield. Brian Blades hauls in four passes for 123 yards and two trips to the end zone as the Seahawks overcome three turnovers and hold on after taking a 37-20 lead in the third quarter.
Dec. 22, 1984: Seahawks 13, Raiders 7
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Just 11 months after falling to Los Angeles in the AFC Championship Game, the Seahawks return the favor by knocking the defending Super Bowl champion Raiders out of the playoffs.
Dave Kreig completes just four of 10 passes for 70 yards, but one of them is a 26-yard toss to Daryl Turner to open the scoring. Dan Doornink totes the ball 29 times for 126 yards, and the Seahawks rush for 205 yards altogether and force three turnovers in holding on for the win, their last playoff triumph at the Kingdome.
Jan. 8, 2011: Seahawks 41, Saints 36
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"Beast Mode" is truly born as the 12th Man shakes Qwest Field in the Seahawks' wild-card win over the defending Super Bowl champion Saints.
Marshawn Lynch's 67-yard touchdown rush late in the fourth quarter puts Seattle ahead, 41-30, and seals the win for the NFC West champions, who finished 7-9 during the regular season. Lynch's rumble also causes seismic activity in Seattle, and he finishes the day with 131 yards on 19 carries.
Matt Hasselbeck, the all-time leader in most Seattle passing categories, finishes 22-of-35 for 272 yards and four scores in his final home appearance with the Seahawks.
Dec. 24, 1983: Seahawks 31, Broncos 7
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This was the first time the Seahawks had ever made the playoffs, and they made their debut a memorable one by besting AFC West rival Denver at the Kingdome on Christmas Eve. Seattle scores 24 unanswered points to win this one going away, with Dave Krieg tossing three TD passes and Curt Warner rushing for 99 yards. The Seahawks defense also forces three turnovers.
Dec. 31, 1983: Seahawks 27, Dolphins 20
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After throwing an interception and falling behind 20-17 in the fourth quarter in Florida, Dave Krieg (15-of-28, 192 yards) goes to work, hitting future Hall of Famer Steve Largent on two consecutive throws totaling 56 yards to put Seattle in the red zone.
Largent's catches, his only ones of the day, sets up Curt Warner (113 yards) from two yards out for the game-winning run and sends the Seahawks to within one win of the Super Bowl.
Jan. 22, 2006: Seahawks 34, Panthers 14
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The Seahawks claim their first-ever conference championship and earn a berth in Super Bowl XL.
Shaun Alexander rushes 34 times for 132 yards and two TDs, and Matt Hasselbeck completes 20 of 28 throws for 219 yards and two more scores. The Seattle defense holds the Panthers to just 36 yards rushing and also forces four turnovers as the Seahawks punch their ticket to Detroit.
Jan. 18, 2015: Seahawks 28, Packers 22
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The unlikeliest comeback of the season results in Seattle's second consecutive Super Bowl berth, and it comes after the Seahawks trailed by a 19-7 score with five minutes remaining in regulation.
Seattle looks done after Russell Wilson is intercepted for a fourth time, but he rushes one yard for a touchdown to pull Seattle within one score with 2:09 left. After Chris Matthews recovers an onside kick, Marshawn Lynch (157 yards) rumbles in from 24 yards out to put the home team ahead. A two-point conversion proves decisive when the Packers kick a 48-yard field goal with 14 seconds left on the clock.
In overtime, the Seahawks win the coin toss, elect to receive and advance to Super Bowl XLIX in Arizona after Wilson (14-of-29, 209 yards) hits Jermaine Kearse from 35 yards out for the game's final score.
Jan. 19, 2014: Seahawks 23, 49ers 17
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Richard Sherman deflects a last-second touchdown pass attempt into Malcolm Smith's hands as the Seahawks hold on against their NFC West rivals and clinch the second NFC championship in franchise history.
Russell Wilson overcomes an early fumble to finish 16-of-25 for 215 yards, including the winning 35-yard TD pass to Jermaine Kearse in the fourth quarter on a free play when San Francisco is penalized. Sherman and Smith later team up to send the Seahawks to their second Super Bowl.
Feb. 2, 2014: Super Bowl XLVIII: Seahawks 43, Broncos 8
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Did you really expect it to be something else?
The Seahawks go into halftime with a 22-0 lead, add six more points on Percy Harvin's second-half kickoff return and cruise to their first-ever NFL title in East Rutherford, N.J.
Seattle linebacker Malcolm Smith makes nine tackles and returns a deflected pass for a touchdown to earn MVP accolades.