Ken Clarke signed with the Eagles as an undrafted player in 1978 and played for the next 10 years, including six as a starter at nose tackle. He accumulated 32.5 sacks during his time in Philly, which is a pretty good number from someone at his position.

After becoming a full-time starter in 1982, he only missed one game for the rest of his time in Philly. He, along with Herm Edwards, was a part of the 1980 Super Bowl defense.