FOXBOROUGH, Mass.—The Los Angeles Rams are getting some much-needed help in the backfield from a running back who starred against them in the Super Bowl. The Rams acquired Sony Michel from the New England Patriots on Wednesday for a conditional selection of later-round picks in next season’s draft. Michel, a first-round pick by the Pats in 2018, could play a significant role immediately for a Rams offense running low on healthy options at running back with the regular season fast approaching. “We identified Sony for many reasons, No. 1 being his experience,” Rams general manager Les Snead said. “Meaning a player who’s carried the ball in big games, in big moments, big drives, big series. The experience of where he played, how he was coached. If we were going to go the route of experience, he was someone that we were definitely eyeing from the start.” The Rams had an …