The 49ers offensive line has become underrated

Photo by Mitchell Leff/Getty ImagesThe San Francisco 49ers defeated the Philadelphia Eagles 42-19 in Week 13, leading to their fourth consecutive victory as they remained undefeated following their bye week.

After dropping 17 points in three straight losses prior to the bye week, the 49ers have averaged 33.5 points in their last four games, getting back to the scoring levels of their early-season success, and have won those contests by an average of 21.25 points.

How has the 49ers offense gotten back to their elite levels of offensive execution?

It starts with quarterback Brock Purdy and the 49ers’ playmakers, who have executed at a high level, leading to a number of explosive plays, as Purdy…