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Preview the San Francisco 49ers' NFL Week 18 matchup with the Seahawks, including live stream, TV channel, odds, and game information.

The San Francisco 49ers defeated the Indianapolis Colts 48-27 on Monday night, in their fifth straight win. Purdy threw for 295 yards, finishing with a career-high five touchdowns. Christian McCaffrey rushed 21 times for 117 yards, making six catches for 29 yards and two touchdowns.

The Week 17 Bears vs. 49ers game is airing on NBC. Fans without cable can livestream tonight’s game online using any live TV streaming service that carries the channel.