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In the fourth quarter of Super Bowl 50, Marshawn Lynch seemingly retired by tweeting a photo of a pair of cleats hanging up. On Monday, Lynch's agent confirmed what the photo suggested, telling the Associated Press that Lynch will in fact retire from football.

Lynch, selected in the first round of the 2007 draft by the Bills, ran for 9,112 yards and 74 touchdowns in his nine-year career. And from 2011 to 2014, as a member of the Seahawks, Lynch might've been the most electrifying runner in the NFL, using his bruising running style to turn into a league-wide icon.

Let's take a look at seven moments we'll never forget from Lynch's playing career.

Marshawn Lynch's bruising running style never made a defense's life easy. (USATSI)

1. Beast Quake

In 2010, the Seahawks limped into the postseason with a 7-9 record thanks to a horrendous NFC West. Because they won the division, the Seahawks "earned" the right to host the Saints, who'd won the Super Bowl the year before. Shockingly, the Seahawks beat the Saints.

This was the clincher: a 67-yard touchdown run that involved too many broken tackles to count and one vicious stiff arm.

The fans in attendance actually caused a small earthquake during Lynch's historic run.

2. Beast Quake Part II

After that run, Lynch seemingly turned into a completely different kind of runner. In his first half-season with the Seahawks before that playoff run, Lynch averaged just 3.5 yards per carry. But after that run, Lynch became one of the most efficient runners in the game, going over the 1,000-yard mark with ease for four consecutive seasons and never averaging fewer than 4.2 yards per carry in that span.

And in 2014, he gave us another run that rivaled Beast Quake.

This time he went for 79 yards.

3. A unique celebration

You might've noticed something unique in both of those runs (photo below via USATSI).

The NFL fined Lynch for his celebration, by the way.

4. "I'm just here so I won't get fined"

Speaking of fines, Marshawn Lynch isn't the biggest fan of talking to reporters. Unfortunately for Lynch, that often results in a fine, courtesy the NFL.

So, before the Super Bowl last year, Lynch answered every question at Media Day the same exact way: "I'm just here so I won't get fined."

Lynch reportedly trademarked the phrase this past December.

5. "About that action, boss"

There's a reason why Lynch doesn't like to speak with reporters. I'll let him explain in the video below, taken before the Seahawks' Super Bowl win two years ago.

Oh and Lynch trademarked that one too.

6. Skittles

Marshawn Lynch loves Skittles so much he ...

7. Driving

OK, here's one throwback to Lynch's days at Cal, which also serves as a fitting final image before Lynch rides off into the sunset.