The San Francisco 49ers’ first quarter against the Philadelphia Eagles was like Monty Python’s Spanish Inquisition in that nobody expected it. Kyle Shanahan’s offense, which ranked first in the NFL in DVOA coming into this crucial game, had minus-6 total yards in the first quarter, averaging minus-1.0 yards per play, which was the fewest in Shanahan’s time with the team — going back to 2017.
