Every 49ers Defensive Coordinator since George Seifert

When Bill Walsh was promoted to the front office in 1989, longtime defensive coordinator George Seifert was chosen to fill his head coaching role.

Twenty-seven years later, the San Francisco 49ers this week hired former Cleveland Browns defensive coordinator Jim O'Neil to the same position.

Here is the complete timeline for how the 49ers over the years transitioned from Seifert all the way to O'Neil.

1989-1993

DC: Bill McPherson

Rank in points: 3rd, 2nd, 4th, 3rd, 16th

Rank in yards: 4th, 3rd, 6th, 15th, 15th

W-L: 62-18

1994

DC: Ray Rhodes

Rank in points: 6th

Rank in yards: 8th

W-L: 13-3

1995-1996

DC: Pete Carroll

Rank in points: 2nd, 4th

Rank in yards: 1st, 7th

W-L: 23-9

1997-1998

DC: John Marshall

**

Mike Holmgren, Mike Shanahan, Jeff Fisher, Pete Carroll and others all once graced the San Francisco sideline.

Rank in points:** 3rd, 13th

Rank in yards: 1st, 23rd

W-L: 25-7

1999-2003

DC: Jim Mora

Rank in points: 30th, 28th, 9th, 18th, 21st

Rank in yards: 28th, 29th, 13th, 14th, 13th

W-L: 39-41

2004

DC: Willy Robinson

Rank in points: 32nd

Rank in yards: 24th

W-L: 2-14

2005-2006

DC: Bill Davis

Rank in points: 30th, 32nd

Rank in yards: 32nd, 26th

W-L: 11-21

2007-2010

DC: Greg Manusky

**

Rank in points:** 20th, 23rd, 4th, 16th

Rank in yards: 25th, 13th, 15th, 13th

W-L: 26-38

2011-2014

DC: Vic Fangio

Rank in points: 2nd, 2nd, 3rd, 10th

Rank in yards: 4th, 3rd, 5th, 5th

W-L: 44-19-1

2015

DC: Eric Mangini

Rank in points: 18th

Rank in yards: 29th

W-L: 5-11

2016-Present

DC: Jim O'Neil

Rank in points: TBD

Rank in yards: TBD

W-L: TBD

Stats from Pro-Football-Reference.com. Additional research provided by former 49ers.com digital editor Andrew Pentis.

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