Preview the Week 15 matchup between the Seattle Seahawks and Indianapolis Colts with predictions, odds, over/under, spread, betting lines and more.

Though he was ineffective last week, Fantasy Football gurus are predicting a big game for Seattle Seahawks' RB Kenneth Walker.

Seattle Seahawks head coach Mike Macdonald has roster decisions to make ahead of Sunday's game against the Indianapolis Colts, but he wasn't willing to share any of them on Friday.

That may be a way for the NFL's leader with 16 turnovers in 13 games to reduce giveaways. But at what cost?

For the second straight year, Seattle's defense has hit another level coming out of the bye week.

Learn which TV channel or how to live stream the NFL Week 15 Seattle Seahawks and Indianapolis Colts game, Sunday, Dec. 14.

Will Phillip Rivers start for the Colts in their Week 15 matchup with Seattle?

Seahawks running back Kenneth Walker III is in the final season of his rookie deal. How he plays to end season, and in the playoffs, could pay off handsomely.

Indianapolis is a good team, but its lack of stability at the quarterback position will continue to hurt them Sunday in Seattle. Unless either Riley or Rivers can pull off the unthinkable, the Colts will drop their fourth straight game while the Seahawks will pick up their fourth straight win. Pick: Seahawks -13.5, Under 40.5

The Indianapolis Colts have ruled out cornerback Sauce Gardner for the team's Week 15 game in Seattle. This will be the second game that Gardner has missed. He did not practice at all during the week. He suffered a calf injury in the Colts ' Week 13 matchup with the Houston Texans.