<div class="at-above-post addthis tool" data-url="http://www.metro.us/purdy-49ers-topple-seahawks-21-13-win-nfc-west/"></div>SEATTLE (AP) Rookie quarterback Brock Purdy never doubted he’d take the field for the 49ers with a chance at winning a division title. But how long Purdy would be able to play through his oblique injury lingered all night in the mind of San Francisco coach Kyle Shanahan. “We were going to see how […]<! AddThis Advanced Settings above via filter on get the excerpt ><! AddThis Advanced Settings below via filter on get the excerpt ><! AddThis Advanced Settings generic via filter on get the excerpt ><! AddThis Share Buttons above via filter on get the excerpt ><! AddThis Share Buttons below via filter on get the excerpt ><div class="at-below-post addthis tool" data-url="http://www.metro.us/purdy-49ers-topple-seahawks-21-13-win-nfc-west/"></div><