Seahawks in uncommon role of underdogs Sunday at San Francisco

Numerous Nevada sports books have made the 49ers 2.5-point favorites over the visiting Seahawks on Sunday in San Francisco, according to multiple line-monitoring websites. If you did a double-take seeing 11-1 Seattle as an underdog, you couldn’t be blamed. According to “The Linemakers” of Sporting News, only the Seahawks and Broncos had been favored in…