Bill Barnwell May 13, 2026, 06:15 AM ET Close Bill Barnwell is a senior NFL writer for ESPN.com. He analyzes football on and off the field like no one else on the planet, writing about in-season X's and O's, offseason transactions and so much more. He is the host of the Bill Barnwell Show podcast , with episodes released weekly. Barnwell joined ESPN in 2011 as a staff writer at Grantland. Necessity is the mother of invention. Sean McVay had probably been thinking about his next offensive trick for years. He might have seen the vision early in his run as coach of the Rams, and he might have witnessed what other teams had done and thought he could do it better. There was a hint to the future over draft weekend a year ago, but it wasn't until the 2026 NFL draft that we really saw how the league had been shifted -- all as a result of one relatively minor injury.…