This has been a humbling year for Chip Kelly. He entered the season with a lifetime 72-28 record as a head coach (in college and the NFL), then suffered through 13 consecutive losses.
As he has wrestled with a talent-thin roster and a ton of injuries, Kelly has adjusted on many of his firmly held beliefs about how to run an offense. Pistol formations have replaced a lot of the shotgun snaps Chip used almost exclusively in Philadelphia. Zone blocking run plays have been mixed with man/gap runs such as power, counter trey, read sweep and toss sweep plays.