Mike Holmgren, Mike Shanahan, Jeff Fisher, Pete Carroll and others all once graced the San Francisco sideline.
When Bill Walsh was promoted to the front office in 1989, longtime defensive coordinator George Seifert had the fortune (and pressure) of assuming his head coaching role.
This meant someone also had the unenviable assignment of replacing Seifert as "DC."
As the San Francisco 49ers seek out their 10th defensive play-caller since Seifert earned the promotion (and proceeded to win two more Super Bowls), here are the men who have followed in his footsteps on the sideline and in the press box overlooking the field.
Rank in points: 3rd, 2nd, 4th, 3rd, 16th
Rank in yards: 4th, 3rd, 6th, 15th, 15th
Rank in points:6th
Rank in yards:8th
Rank in points:2nd, 4th
Rank in yards:1st, 7th
Rank in points:3rd, 13th
Rank in yards:1st, 23rd
Rank in points:30th, 28th, 9th, 18th, 21st
Rank in yards:28th, 29th, 13th, 14th, 13th
Rank in points: 32nd
Rank in yards: 24th
Rank in points:30th, 32nd
Rank in yards:32nd, 26th
Rank in points:20th, 23rd, 4th, 16th
Rank in yards:25th, 13th, 15th, 13th
Rank in points:2nd, 2nd, 3rd, 10th
Rank in yards:4th, 3rd, 5th, 5th
Rank in points:?
Rank in yards:?
Stats from Pro-Football-Reference.com*