Alan Williams

Team: Not EmployedType: Defensive

Coaching Timeline

Why does coaching matter?

CFB

Norview (VA)

Asst. Head Coach

1992-954 yrs

CFB

William & Mary

Defensive Backs

1996-005 yrs

Tampa Bay Buccaneers

Defensive Assistant

20011 yr

Indianapolis Colts

Other Notable Asst.

2002-1110 yrs

Minnesota Vikings

Defensive Coordinator

2012-132 yrs

Detroit Lions

Defensive Backs

2014-174 yrs

Indianapolis Colts

Defensive Backs

2018-214 yrs

Chicago Bears

Defensive Coordinator

2022-232 yrs

Team Info

Season	Role	Team	Record	HC	OC	DC	QB1	QB2	RB1	WR/TE 1	WR/TE 2
2023	Defensive Coordinator	CHI	7-10	Matt Eberflus	Luke Getsy	Alan Williams	Justin Fields(12.75)	Tyson Bagent(4.50)	Khalil Herbert(11.50)	D.J. Moore(17.00)	Cole Kmet(16.50)
2022	Defensive Coordinator	CHI	3-14	Matt Eberflus	Luke Getsy	Alan Williams	Justin Fields(15.00)	Trevor Siemian(1.25)	David Montgomery(15.25)	Cole Kmet(17.00)	Darnell Mooney(11.75)
2021	Other Notable Asst.	IND	9-8	Frank Reich	Marcus Brady	Matt Eberflus	Carson Wentz(17.00)	—	Jonathan Taylor(17.00)	Michael Pittman(16.75)	Zach Pascal(16.00)
2020	Other Notable Asst.	IND	11-5	Frank Reich	Nick Sirianni	Matt Eberflus	Philip Rivers(15.75)	—	Jonathan Taylor(14.75)	T.Y. Hilton(14.25)	Zach Pascal(16.00)
2019	Other Notable Asst.	IND	7-9	Frank Reich	Nick Sirianni	Matt Eberflus	Jacoby Brissett(14.50)	Brian Hoyer(1.75)	Marlon Mack(13.50)	Zach Pascal(15.75)	T.Y. Hilton(9.50)

Coach Impact

Note: only calculated for first year upon arrival — take results with a grain of salt.

Percentiles

Chicago Bears (2022–2023)

Defensive Coordinator

	Before (2021)	First Year (2022)	Delta
DEFENSE
RZ P/V	5.0⁵⁸	5.4²¹	▲ +0.4²³
3&Out%	28.9%³⁴	23.4%⁶	▼ -5.5%¹⁸
TO Rate	1.5%²¹	2.1%⁵⁹	▲ +0.6%⁸³
Penalty EPA	15.1¹²	-1.4⁸⁷	▼ -16.5⁹⁴
Pass EPA	0.046⁵⁰	0.190⁶	▲ +0.144¹¹
Rush EPA	0.000¹⁵	0.031⁵	▲ +0.031³⁸
xRY Allowed	4.30¹⁹	4.58⁴	▲ +0.28²⁴
RYOE Allowed	0.20³⁹	0.83⁶	▲ +0.63¹⁴
YAC OEX Allowed	0.52⁴¹	0.70¹⁶	▲ +0.18³³
xYAC OEX Allowed	0.18¹⁷	0.19¹⁷	▲ +0.00⁴²

Core Efficiency - Defensive

PercentilesGraph

Pass/Rush Splits - Defensive

PercentilesGraph

Year	Role	Team	% Pass	Pass EPA	Pass Succ%	Pass SOS	xYAC OEX	YAC OEX	% RB Rush	Rush EPA	Rush Succ%	Rush SOS	xRY	RYOE	% QB Rush	QB Rush EPA
2023	DC	CHI	64.2%	0.021	44.0%	-0.016	0.11	0.97	30.9%	-0.132	35.5%	-0.025	4.30	-0.28	4.9%	-0.001
2022	DC	CHI	50.6%	0.190	51.6%	0.015	0.19	0.70	41.8%	0.031	43.6%	0.006	4.58	0.83	7.7%	0.296

Season

Role

Team

Record

QB1

QB2

RB1

WR/TE 1

WR/TE 2

2023

Defensive Coordinator

7-10

Justin Fields(12.75)

Tyson Bagent(4.50)

Khalil Herbert(11.50)

D.J. Moore(17.00)

Cole Kmet(16.50)

2022

Defensive Coordinator

3-14

Justin Fields(15.00)

Trevor Siemian(1.25)

David Montgomery(15.25)

Cole Kmet(17.00)

Darnell Mooney(11.75)

2021

Other Notable Asst.

9-8

Carson Wentz(17.00)

—

Jonathan Taylor(17.00)

Michael Pittman(16.75)

Zach Pascal(16.00)

2020

Other Notable Asst.

11-5

Philip Rivers(15.75)

—

Jonathan Taylor(14.75)

T.Y. Hilton(14.25)

Zach Pascal(16.00)

2019

Other Notable Asst.

7-9

Jacoby Brissett(14.50)

Brian Hoyer(1.75)

Marlon Mack(13.50)

Zach Pascal(15.75)

T.Y. Hilton(9.50)

	Before (2021)	First Year (2022)	Delta
DEFENSE
RZ P/V	5.0⁵⁸	5.4²¹	▲ +0.4²³
3&Out%	28.9%³⁴	23.4%⁶	▼ -5.5%¹⁸
TO Rate	1.5%²¹	2.1%⁵⁹	▲ +0.6%⁸³
Penalty EPA	15.1¹²	-1.4⁸⁷	▼ -16.5⁹⁴
Pass EPA	0.046⁵⁰	0.190⁶	▲ +0.144¹¹
Rush EPA	0.000¹⁵	0.031⁵	▲ +0.031³⁸
xRY Allowed	4.30¹⁹	4.58⁴	▲ +0.28²⁴
RYOE Allowed	0.20³⁹	0.83⁶	▲ +0.63¹⁴
YAC OEX Allowed	0.52⁴¹	0.70¹⁶	▲ +0.18³³
xYAC OEX Allowed	0.18¹⁷	0.19¹⁷	▲ +0.00⁴²

Before (2021)

First Year (2022)

Delta

DEFENSE

RZ P/V

5.0⁵⁸

5.4²¹

▲ +0.4²³

3&Out%

28.9%³⁴

23.4%⁶

▼ -5.5%¹⁸

TO Rate

1.5%²¹

2.1%⁵⁹

▲ +0.6%⁸³

Penalty EPA

15.1¹²

-1.4⁸⁷

▼ -16.5⁹⁴

Pass EPA

0.046⁵⁰

0.190⁶

▲ +0.144¹¹

Rush EPA

0.000¹⁵

0.031⁵

▲ +0.031³⁸

xRY Allowed

4.30¹⁹

4.58⁴

▲ +0.28²⁴

RYOE Allowed

0.20³⁹

0.83⁶

▲ +0.63¹⁴

YAC OEX Allowed

0.52⁴¹

0.70¹⁶

▲ +0.18³³

xYAC OEX Allowed

0.18¹⁷

0.19¹⁷

▲ +0.00⁴²

Year

Role

Team

% Pass

Pass EPA

Pass Succ%

Pass SOS

xYAC OEX

YAC OEX

% RB Rush

Rush EPA

Rush Succ%

Rush SOS

xRY

RYOE

% QB Rush

QB Rush EPA

2023

CHI

64.2%

0.021

44.0%

-0.016

0.11

0.97

30.9%

-0.132

35.5%

-0.025

4.30

-0.28

4.9%

-0.001

2022

CHI

50.6%

0.190

51.6%

0.015

0.19

0.70

41.8%

0.031

43.6%

0.006

4.58

0.83

7.7%

0.296