Upon his retirement in 1982, he held the record for the most wins (323) as a head coach in collegiate football history.
When he retired in 1982 he held the record for most wins as head coach in college football history.
When he retired in 1982 he held the record for most wins as head coach in college football history.
Use simpler wording: Upon his retirement in 1982, he held the record for the most wins (323) as a head coach in collegiate football history. Output: