the season, longtime tight end Ted Kwalick left the 49ers to join the World Football League, then the Oakland Raiders upon the WFL's dissolution. The 49ers dropped to 5–9 in what would be Dick Nolan's final season as coach in 1975, losing their final four games of the season. Wilbur Jackson was hurt much of the year and Delvin Williams led the 49ers in rushing with 631 yards rushing. Following the 1975 season the 49ers traded for New England Patriots quarterback Jim Plunkett, former Heisman Trophy winner from nearby Stanford University (which was also the alma mater of John Brodie). Though Plunkett had shown promise with the Patriots, he had not won there and it was thought that he needed a change of scenery. Monte Clark was also brought on as 49ers head coach. The 49ers featured one of the best running games in the NFL in 1976. Delvin Williams emerged as an elite back, gaining over 1,200 yards rushing and made the Pro Bowl. Wilbur Jackson also enjoyed a resurgence, rushing for 792 yards. Once again Gene Washington was the team's leading receiver with 457 yards receiving and six scores. The 49ers started the season 6–1 for their best start since 1970. Most of the wins were against second-tier teams, although the 49ers did shut out the Rams 16–0, in Los Angeles on Monday Night Football. In that game the 49ers recorded 10 sacks, including 6 by Tommy Hart. However, the 49ers lost four games in a row, including two against divisional rivals Los Angeles and Atlanta that proved fatal to their playoff hopes. Edward DeBartolo era (1977–1999) Louis G. Spadia retired from the 49ers in 1977 upon the team's sale to the DeBartolo Family. The team was sold to Edward J. DeBartolo Jr. in March 1977, and despite finishing the season with a winning record of 8–6, Clark was fired after just one season by newly hired general manager Joe Thomas, who oversaw the worst stretch of football in the team's history. Under coach Ken Meyer the 49ers lost their first five games of the 1977 season, including being shut out twice. Though they won five of their next six, they lost their last three games to finish the season 5–9. Playing in San Francisco did not revive Plunkett's career as he had another disappointing season, throwing only 9 touchdown passes. Bright spots for the 49ers included defensive