RENTON, Wash. — On his first pass attempt of the Seattle Seahawks’ 44-13 win against the New Orleans Saints on Sunday, Sam Darnold improvised. The Saints’ pass rush closed in, and Darnold scrambled to his left to find Jaxon Smith-Njigba for a 29-yard pickup. Darnold remained calm and poised while throwing against his body for his first of 14 completions on 18 attempts for 218 yards and two touchdowns. “Understanding momentum, understanding how fast I’m going and just being able to turn my shoulders,” Darnold said Sunday. So, let’s keep it rolling.”The Seahawks have struggled to run the ball, notching the fourth-fewest rushing yards in the league this season.