running back Franco Harris said "Knocking over people can look very good but you can't do it forever. Sometimes it's going to be somebody else who knocks you over ... so the most important thing I think isn't to get a few extra yards every time but to make sure you're healthy enough to play." Bum Phillips, though, favored Campbell's running style. "I've been looking for a back like Earl," he said. "I'm not going to change his style. Why would I? You don't want a guy who gets hit and then flops on the ground. Earl does the same thing other backs do, only better." After an 11–5 regular-season record in 1979, the Oilers defeated the Denver Broncos in the wild-card round for their first home playoff win since 1960. Houston then won the divisional round game against the San Diego Chargers despite both Pastorini and Campbell missing the game due to injuries. With both back in the lineup, however, the Oilers lost the conference championship game the following week against the Pittsburgh Steelers. Campbell was held to just 15 yards on 17 carries against Pittsburgh's "Steel Curtain" defense. Campbell had his most productive rushing yardage season in 1980, with 1,934 yards in 15 games—an average of 128.9 yards per game. He finished 70 yards short of breaking O. J. Simpson's single-season rushing yards record set in 1973. He again led the league in rushing yards and touchdowns, and broke his own record for carries, with 373. Over 60 percent of his yards came in the fourth quarter. "That's when the tough get going," said Campbell. He had four games of over 200 rushing yards, a single-season record that still stands as of the end of the 2016 season. He also threw a 57-yard touchdown pass to receiver Billy "White Shoes" Johnson against the Steelers for his only career completion out of three attempts. The Oilers again finished with an 11–5 regular-season record, but lost the wild-card playoff game to the Oakland Raiders. For the third straight year, Campbell was awarded the Jim Thorpe Trophy by the Newspaper Enterprise Association as the league's MVP, and named the Offensive Player of the Year by the AP. Bum Phillips was fired three days after Houston's loss in the wild-card game, and defensive coordinator Ed Biles was given the head coaching job. In 1981, the Oilers finished 7–9 and failed to make