The mystery surrounding the last – and now biggest – game of the Seattle Seahawks’ regular season has been solved.

Stacy Rost: Three things to know after Seahawks’ win over Panthers

The Seahawks will play their regular season finale at 5 p.m. Saturday on the road against the San Francisco 49ers, and everything that could possibly be on the line will be.

While the Seahawks enter with a 13-3 record and one-game lead over the 12-4 Niners, whoever wins this game will take the NFC West division crown, the No. 1 seed from the NFC to the playoffs, and the bye through the wild card round of the postseason. For more information on that, click the link below.

Seahawks Playoff Update: What’s on the line in Week 18 vs. 49ers

The TV broadcast of the game will air on ABC, ESPN and the ESPN app. That means that locally in Seattle, the game will air on the ABC affiliate, KOMO 4.

For the Seahawks Radio Network broadcast featuring former Seahawks players Steve Raible and Dave Wyman on the call, that will be available in the usual places: the flagship stations Seattle Sports 710 AM and KIRO Newsradio 97.3, the Seattle Sports and KIRO Newsradio apps, and the official Seahawks app.

The radio broadcast will begin at 2 p.m. Saturday with the pregame show hosted by Michael Bumpus along with a panel of other analysts and former Seahawks players.

The Seahawks enter Week 18 on a six-game winning streak following their 27-10 win Sunday on the road over the Carolina Panthers (8-8). The 49ers have also won six in a row, including their 42-38 victory in a shootout with Chicago (11-5) on Sunday night that eliminated the NFC North-leading Bears from contention for the No. 1 seed.

Week 18: Seahawks at 49ers

• When: 5 p.m. Saturday, Jan. 3
• TV: ABC, ESPN, ESPN app
• Radio: Seahawks Radio Network – Seattle Sports 710 AM, KIRO Newsradio 97.3 FM, Seattle Sports app, KIRO Newsradio app, official Seahawks app
• Radio pregame show: 2 p.m. Saturday

More on the Seattle Seahawks

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• Seahawks rushing attack finding stride at right time
• Shaheed among two Seahawks WRs injured vs. Panthers
• Instant Reaction: Seattle Seahawks beat Panthers, reach 13 wins