Marion Motley also had a 69-yard rushing and 33-yard receiving touchdowns in the game. While Motley did not factor in the Browns' championship game win against the Los Angeles Rams, he led the league in rushing with 810 yards in 1950 despite averaging fewer than 12 carries per game. He was a unanimous first-team All-Pro selection. By the 1951 season, Motley started to feel the physical effects of his hard-hitting, up-the-middle running style. He suffered a knee injury in training camp, and he was getting older; by the time the season was in full swing, he was 31. Motley only ran for
Hard rock III" (1970) and "Led Zeppelin IV" (1971). The latter included the track "Stairway to Heaven", which would become the most played song in the history of album-oriented radio. Deep Purple continued to define hard rock, particularly with their album "Machine Head" (1972), which included the tracks "Highway Star" and "Smoke on the Water". In 1975 guitarist Ritchie Blackmore left, going on to form Rainbow and after the break-up of the band the next year, vocalist David Coverdale formed Whitesnake. 1970 saw the Who release "Live at Leeds", often seen as the archetypal hard rock live album, and the following year