 He suffered a second injury to the same knee after winning the starting position at right defensive tackle, but came back after five weeks to be the starter for the Rams in 1971 and 1972 next to his brother, Merlin Olsen.Merlin and Phil played side-by-side as defensive tackles for the Los Angeles Rams in 1971 and 1972, the only time in NFL history this has ever happened.A younger brother, Orrin, played for the Kansas City Chiefs in 1976.