Before the Ravens and interested NFL teams decide on Roman’s future, they must first determine just how effective the team’s offense was, and how much of that was because of him. The Ravens finished No. 9 in the NFL in yards per game but No. 26 in yards per play. They had the 15th-most efficient offense, according to Football Outsiders, but were actually less efficient during their late-season playoff push, the analytics website said. Part of that was the Ravens’ emphasis on running, a generally less efficient offensive strategy, but their defensively challenged opponents didn’t help, either.