He played as the starting left defensive end in Super Bowl II for the 1967 Raiders. In the 1967 regular season on a Raiders team with a won-lost record of 13–1, he was one of the main pass-rushers of a front four including Dan Birdwell, Tom Keating, and Ben Davidson  with a combined league-leading total of 67 sacks and 665 yards lost, the latter an all-time record, the all-time record for sacks being 72, done in a 16-game season, the Raiders leading the league in sacks from 1966 to 1968, an all-time record.
In Super Bowl II in 1967, he played as the starting left defensive end for the Raiders, a team that finished with a 13–1 record. He was one of the key pass-rushers on this team alongside Dan Birdwell, Tom Keating, and Ben Davidson. Together, they had an all-time leading total of 67 sacks and 665 yards lost.