It's been a tough season for the Seahawks, but they showed on Sunday against a struggling Lions team that they're still going to finish the year fighting to the end. Behind a dominant offensive performance, the Seahawks rolled to a 51-29 victory that was their first 50-point game since a win in Toronto over the Bills in 2012. Here are six rapid reactions to a win that improved Seattle's record to 6-10:

1. The Seahawks offense had a monster game.

With Russell Wilson dealing—he was 20 for 29 for 236 yards and four touchdowns—and with Rashaad Penny posting career-best numbers yet again, and with DK Metcalf dominating in the red zone, the Seahawks had their best offensive game of the season and one of their best in recent memory. In addition to their highest point total in nearly a decade, the Seahawks also had season highs in first downs (29) and yards (497), and not coincidentally, those numbers came on a day when the Seahawks, who have been the worst third-down team in the league this season, went 7 for 12 on third down.

For some perspective on how good the offense was, particularly early in the game, consider that the Seahawks had more first downs in the first half (19) than they had total in 11 games this year, and more first-half yards (333) than their total in 10 games.

2. Rashaad Penny had yet another big game.

Rashaad Penny's late-season surge continued against the Lions, with Penny enjoying his biggest game yet.

After rushing for a then career-best 137 yards and two touchdowns against Houston, Penny followed that up two weeks later with 135 yards and a touchdown against Bears. And on Sunday against the Lions, Penny topped both of those performances and had one of the best games by a running back in franchise history, rushing for 170 yards and two touchdowns on 25 carries, making him one of only six backs in team history to rush for 170 or more yards along with Shaun Alexander, Thomas Rawls, Curt Warner, Chris Warren and Ricky Watters.

3. Wilson to Metcalf was quite the combo on Sunday.

While DK Metcalf finished with modest numbers when it came to catches and yards (6 for 63), Metcalf was a monster in the red zone, hauling in three touchdown passes, a career high for the third-year receiver.

Metcalf, who now has a career-best 12 touchdowns this season, used his physical ability on one touchdown, just outmuscling a defensive back for a contested ball, and used his route-running on another, turning his defender around to get wide open with the Lions bringing pressure, allowing Wilson to loft a perfect touch pass into the end zone that Metcalf could run under for an easy score. Wilson found Metcalf one more time in the back of the end zone in the fourth quarter to give Metcalf the first three-touchdown game of his career.

4. Wilson and his top two receivers reached some significant milestones.

As mentioned above, Metcalf's three touchdowns were a career high, and his 64 receiving yards gave him 3,112 in his career, moving him ahead of Joey Galloway for the most receiving yards in a player's first three season in franchise history. With 29 touchdown catches, Metcalf moved ahead of Galloway for the second most through three seasons, trailing only Daryl Turner, who had 30.

Tyler Lockett, meanwhile, had a relatively quiet game with 24 yards and a touchdown, but with those yards he is now up to 1,077 for the season, a new career-high. Lockett also moved into fifth place on the team's all-time receptions list.

And with four touchdowns on Sunday, Wilson became just the third player along with Dan Marino and Peyton Manning as the only quarterback with 20 or more touchdowns in each of their first 10 seasons.

5. Bobby Wagner's injury was concerning, but the linebacker duo of Jordyn Brooks and Cody Barton did well in his absence.

In yet another Pro-Bowl season, Bobby Wagner had played every defensive snap for the Seahawks through 15 games, but he unfortunately went down awkwardly on the first play from scrimmage on Sunday and did not return due to what was announced as a knee injury.

While Wagner's status will be worth monitoring going forward, the Seahawks did get good play out of Cody Barton, who took over for the defensive captain and finished the game with seven tackles, one tackle for loss and a pass defense.

Jordyn Brooks also had another big game, recording 10 tackles to give him 164 this season, the third-highest single-season total in team history behind Wagner this season and Wagner in 2016.

6. D.J. Reed with a pair of picks.

While the Seahawks have gotten really good play out of cornerbacks D.J. Reed, Sidney Jones IV and, before his injury, Tre Brown, they came into Sunday's game without a single interception from a cornerback this season. Reed changed that on Sunday with a pair of picks, two of the three Seattle had against Lions backup Tim Boyle. Ugo Amadi, listed as a safety though he plays the nickel corner position, also added an interception late and should have scored, but fumbled the return while trying to switch the ball from one hand to the other.