Rank	Blocks	Avg	Player	Pos	Seasons	Gms
1	258	2.0	Greg Ostertag	C	1992-95	127
2	243	1.7	Nick Collison	F	2000-03	142
3	242	1.7	Eric Chenowith	C	1998-2001	139
4	218	1.7	Scot Pollard	C	1994-97	128
5	200	1.4	Danny Manning	F-C	1985-88	147
6	155	1.6	John Crawford	F	1978-81	98
7	141	1.5	Donnie Von Moore	F-C	1974-75,1977-78	97
8	138	1.3	Greg Dreiling	C	1984-86	105
8	138	1.1	Raef LaFrentz	F-C	1995-98	131
10	136	1.5	Paul Mokeski	C	1976-79	89
11	112	0.8	B. J. Williams	F	1994-97	136
12	107	1.1	Drew Gooden	F	2000-02	98
13	98	0.9	Paul Pierce	F	1996-98	108
14	86	1.6	Herb Nobles	F	1976-77	53
15	83	1.0	Brian Martin	C-F	1982-84	84
16	65	0.6	Kelly Knight	C-F	1980, 1982-84	101
17	62	0.8	Wayne Simien	F	2002-Present	80
17	62	0.6	Keith Langford	G-F	2002-Present	108
19	58	0.7	Rick Suttle	C-F	1973-75	83
19	58	0.6	Ken Koenigs	F-C	1975-78	96
21	57	0.4	Kirk Hinrich	G	2000-03	141
22	53	0.6	Norm Cook	F	1974-76	83
23	52	0.4	Nick Bradford	F-G	1997-2000	140
24	50	0.7	Eric Pauley	C	1992-93	67
24	50	0.4	David Magley	F-G	1979-82	113
26	49	0.4	Mike Maddox	F	1988-91	123
27	44	0.6	Jeff Graves	F	2003-04	69
27	44	0.3	Richard Scott	F	1991-94	137
29	43	1.4	David Padgett	C	2004	31
29	43	0.3	Calvin Thompson	G-F	1983-86	131
31	39	0.7	Sean Alvarado	C	1987, 1989	58
31	39	0.3	Milt Newton	F-G	1985, 1987-89	128
33	38	1.1	Pekka Markkanen	C	1990	34
34	37	0.3	Kenny Gregory	G-F	1998-2001	136
34	37	0.3	Steve Woodberry	G-F	1991-94	138
36	36	0.3	T. J. Pugh	F-C	1996-99	130
37	33	0.2	Ryan Robertson	G	1996-99	142
37	33	0.6	Lester Earl	F-C	1998-2000	63
39	32	0.3	Bryant Nash	F	2001-04	122
40	31	0.4	Alonzo Jamison	F	1990-92	84
41	28	0.2	Kevin Pritchard	G	1987-90	139
42	25	0.5	Chester Giles	F-C	1979-80	48
42	25	0.2	Patrick Richey	F-G	1991-94	124
44	24	0.2	Darnell Valentine	G	1978-81	118
44	24	0.2	Jeff Carey	F-C	1999-2002	120
44	24	0.2	Chris Piper	F	1985-88	129
47	23	0.6	Kerry Boagni	G	1983-84	39
48	22	0.2	Mark Randall	F	1987,1989-91	132
49	20	0.6	J.R. Giddens	G	2004-Present	33
49	20	0.3	David Johanning	C	1991-92	58
-	14	0.1	Aaron Miles	G	2002-Present	108
-	10	0.2	Moulaye Niang	F	2003-Present	55
-	9	0.2	Christian Moody	F	2003-Present	46
-	7	0.1	Jeff Hawkins	G	2003-Present	60
-	6	0.1	Michael Lee	G	2002-Present	88
-	1	0.1	Nick Bahe	G	2004-Present	16
-	0	0.0	Jeremy Case	G	2004-Present	21
-	0	0.0	Stephen Vinson	G	2003-Present	34