Top 100 Defensive Players in College Basketball

Here are the top 100 defenders in college basketball based on calculations at www.valueaddbasketball.com as of December 29, 2018. These are the personal AdjD calculations, which tells you how much each player lowers his team's AdjD at www.kenpom.com. This system was developed in 2011 and explained in this post and has undergone only minor adjustments.

Rnk	Top 100 Defenders	Team	Height	Conf	Class	AdjD
1	Matisse Thybulle	Washington	6-foot-5	P12	4 Sr	-4.45
2	Ethan Happ	Wisconsin	6-foot-10	B10	4 Sr	-4.32
3	Zion Williamson	Duke	6-foot-7	ACC	1 Fr	-4.14
4	Nicolas Claxton	Georgia	6-foot-11	SEC	2 So	-4.11
5	Dedric Lawson	Kansas	6-foot-9	B12	3 Jr	-4.04
6	Tyler Bey	Colorado	6-foot-7	P12	2 So	-3.89
7	Matt Mooney	Texas Tech	6-foot-3	B12	4 Sr	-3.8
8	Bruno Fernando	Maryland	6-foot-10	B10	2 So	-3.72
9	Jon Teske	Michigan	7-foot-1	B10	3 Jr	-3.68
10	Matt Rafferty	Furman	6-foot-8	SC	4 Sr	-3.61
11	Ty Jerome	Virginia	6-foot-5	ACC	3 Jr	-3.59
12	Ed Polite	Radford	6-foot-5	BSth	4 Sr	-3.57
13	Brandon Clarke	Gonzaga	6-foot-8	WCC	3 Jr	-3.5
14	Jordan Murphy	Minnesota	6-foot-7	B10	4 Sr	-3.48
15	Aric Holman	Mississippi St.	6-foot-10	SEC	4 Sr	-3.46
16	Daniel Gafford	Arkansas	6-foot-11	SEC	2 So	-3.41
17	Brandon Gilbeck	Western Illinois	7-foot-0	Sum	4 Sr	-3.4
18	Xavier Tillman	Michigan St.	6-foot-8	B10	2 So	-3.39
19	Jeromy Rodriguez	East Tennessee St.	6-foot-7	SC	3 Jr	-3.33
20	Trent Forrest	Florida St.	6-foot-4	ACC	3 Jr	-3.29
21	Braxton Key	Virginia	6-foot-8	ACC	3 Jr	-3.28
22	Josh Reaves	Penn St.	6-foot-5	B10	4 Sr	-3.24
23	Bol Bol	Oregon	7-foot-2	P12	1 Fr	-3.22
24	Cortez Edwards	Southern Mississippi	6-foot-2	CUSA	4 Sr	-3.18
25	Kevarrius Hayes	Florida	7-foot-9	SEC	4 Sr	-3.13
26	Zavier Simpson	Michigan	7-foot-0	B10	3 Jr	-3.12
27	Grant Williams	Tennessee	6-foot-7	SEC	3 Jr	-3.1
28	Chuma Okeke	Auburn	6-foot-8	SEC	2 So	-3.1
29	Ebuka Izundu	Miami FL	6-foot-10	ACC	4 Sr	-3.08
30	Barry Brown	Kansas St.	6-foot-3	B12	4 Sr	-3.07
31	Nick Rakocevic	Southern California	6-foot-11	P12	3 Jr	-3.07
32	Kylor Kelley	Oregon St.	7-foot-0	P12	3 Jr	-3.06
33	Nickeil Alexander-Walker	Virginia Tech	6-foot-5	ACC	2 So	-3.06
34	Nate Grimes	Fresno St.	6-foot-8	MWC	3 Jr	-3.05
35	Charles Bassey	Western Kentucky	6-foot-11	CUSA	1 Fr	-3.04
36	Tariq Owens	Texas Tech	6-foot-10	B12	4 Sr	-3.03
37	Dylan Windler	Belmont	6-foot-8	OVC	4 Sr	-2.98
38	Jordan Nwora	Louisville	6-foot-7	ACC	2 So	-2.95
39	Marcus Santos-Silva	Virginia Commonwealth	6-foot-7	A10	2 So	-2.92
40	Alpha Diallo	Providence	6-foot-7	BE	3 Jr	-2.91
41	Dhamir Cosby-Roundtree	Villanova	6-foot-9	BE	2 So	-2.89
42	Dylan Osetkowski	Texas	6-foot-9	B12	4 Sr	-2.87
43	Cameron Krutwig	Loyola Chicago	6-foot-9	MVC	2 So	-2.87
44	RJ Williams	Boise St.	6-foot-7	MWC	2 So	-2.87
45	Isaiah Roby	Nebraska	6-foot-8	B10	3 Jr	-2.86
46	Nate Renfro	San Francisco	6-foot-8	WCC	4 Sr	-2.86
47	Javon Bess	St. Louis	6-foot-6	A10	4 Sr	-2.84
48	King McClure	Baylor	6-foot-3	B12	4 Sr	-2.82
49	Tre'Shawn Thurman	Nevada	6-foot-8	MWC	4 Sr	-2.81
50	Tristan Clark	Baylor	6-foot-9	B12	2 So	-2.77
51	Kamar Baldwin	Butler	6-foot-1	BE	3 Jr	-2.76
52	Shaq Buchanan	Murray St.	6-foot-3	OVC	4 Sr	-2.75
53	Elijah Childs	Bradley	6-foot-7	MVC	2 So	-2.74
54	Neemias Queta	Utah St.	6-foot-11	MWC	1 Fr	-2.74
55	BJ Stith	Old Dominion	6-foot-5	CUSA	4 Sr	-2.73
56	Jehyve Floyd	Holy Cross	6-foot-8	Pat	4 Sr	-2.72
57	Xavier Sneed	Kansas St.	6-foot-5	B12	3 Jr	-2.72
58	Talen Horton-Tucker	Iowa St.	6-foot-4	B12	1 Fr	-2.71
59	PJ Washington	Kentucky	6-foot-8	SEC	2 So	-2.7
60	Zylan Cheatham	Arizona St.	6-foot-8	P12	4 Sr	-2.69
61	Tacko Fall	Central Florida	7-foot-6	Amer	4 Sr	-2.66
62	Alexis Yetna	South Florida	6-foot-8	Amer	1 Fr	-2.64
63	Tres Tinkle	Oregon St.	6-foot-8	P12	3 Jr	-2.63
64	Juwan Morgan	Indiana	6-foot-8	B10	4 Sr	-2.62
65	Jaime Echenique	Wichita St.	6-foot-11	Amer	3 Jr	-2.62
66	Tyrese Haliburton	Iowa St.	6-foot-5	B12	1 Fr	-2.59
67	Trhae Mitchell	South Alabama	6-foot-6	SB	3 Jr	-2.58
68	Oshae Brissett	Syracuse	6-foot-8	ACC	2 So	-2.56
69	Keith Braxton	St. Francis PA	6-foot-5	NEC	3 Jr	-2.55
70	Jordan Goodwin	St. Louis	6-foot-3	A10	2 So	-2.53
71	Jarrett Culver	Texas Tech	6-foot-6	B12	2 So	-2.52
72	Brekkott Chapman	Weber St.	6-foot-9	BSky	4 Sr	-2.52
73	Anthony Lawrence	Miami FL	6-foot-7	ACC	4 Sr	-2.52
74	Charles Matthews	Michigan	6-foot-6	B10	4 Sr	-2.52
75	Alex Peacock	Texas St.	6-foot-7	SB	4 Sr	-2.51
76	Jack White	Duke	6-foot-7	ACC	3 Jr	-2.5
77	Brady Manek	Oklahoma	6-foot-9	B12	2 So	-2.49
78	Elston Jones	UC Irvine	6-foot-9	BW	4 Sr	-2.49
79	Kenny Goins	Michigan St.	6-foot-7	B10	4 Sr	-2.49
80	Nick Muszynski	Belmont	6-foot-11	OVC	1 Fr	-2.49
81	Doug Taylor	Ohio	6-foot-9	MAC	4 Sr	-2.48
82	Tamenang Choh	Brown	6-foot-5	Ivy	2 So	-2.47
83	Nate Pierre-Louis	Temple	6-foot-4	Amer	2 So	-2.46
84	Osun Osunniyi	St. Bonaventure	6-foot-10	A10	1 Fr	-2.44
85	Paschal Chukwu	Syracuse	7-foot-2	ACC	4 Sr	-2.43
86	Chuba Ohams	Fordham	6-foot-8	A10	3 Jr	-2.43
87	Mark Vital	Baylor	6-foot-5	B12	2 So	-2.42
88	Sagaba Konate	West Virginia	6-foot-8	B12	3 Jr	-2.41
89	Elijah Mitrou-Long	Texas	6-foot-1	B12	3 Jr	-2.41
90	Donta Hall	Alabama	6-foot-9	SEC	4 Sr	-2.39
91	Kaleb Wesson	Ohio St.	6-foot-9	B10	2 So	-2.38
92	Jarrell Brantley	Charleston Southern	6-foot-7	BSth	4 Sr	-2.37
93	Elijah Thomas	Clemson	6-foot-9	ACC	4 Sr	-2.36
94	Isaiah Livers	Michigan	6-foot-7	B10	2 So	-2.36
95	Chris Silva	South Carolina	6-foot-9	SEC	4 Sr	-2.34
96	Jaxson Hayes	Texas	6-foot-11	B12	1 Fr	-2.34
97	Luke Maye	North Carolina	6-foot-8	ACC	4 Sr	-2.33
98	Chase Jeter	Arizona	6-foot-10	P12	3 Jr	-2.33
99	James Banks	Georgia Tech	6-foot-9	ACC	3 Jr	-2.32
100	Jason Burnell	Jacksonville St.	6-foot-7	OVC	4 Sr	-2.32