In October 1968, Farr was named by the AP as the NFL offensive player of the week after totaling 210 yards (138 rushing, 72 receiving) and scoring three touchdowns in a 28-10 victory over the Chicago Bears. The following week, he set a club record with 29 carries, good for 145 rushing yards. He led the NFL with 490 rushing yards through the first six games of the 1968 season, but he was injured on the third play of the game against the San Francisco 49ers, missed five games, and underwent surgery on his left knee. He finished the 1968 season with 972 yards from scrimmage, 597 rushing and 375 receiving. His average of 66.3 rushing yards per game ranked fifth in the NFL in 1968.