PITTSBURGH—When Sam Darnold tossed a pitch to Kenneth Walker III late in Sunday's game, he figured it was a good play to bleed a little clock and set up a Jason Myers field goal to extend Seattle's lead.

After all, it was third-and-goal from the 19-yard line, hardly a situation that lends itself a high rate of conversion, especially not on a running play. But following strong blocking on the left side of the line, Walker provided a reminder that he is one of the league's most explosive backs, sprinting 19 yards to the endzone to give the Seahawks a game-clinching score in a 31-17 win over the Steelers.

"Every time I touch the ball, I'm trying to score, and the O-line opened a hole up to the left side, and I barely had to make anyone miss," Walker said. "They made my job easier, and shoot

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