averaged the most blocks per game with 20 or fewer minutes played in a season that played at least 50 games in that season since 1985

Since 1984-85, Manute Bol has the most blocks per game with 50+ games played and 20 or fewer minutes played in a season with 2.6 per game in 1986-87.

Interpreted as:

averaged the most blocks per game by a player with 20 or fewer minutes played in a season that played at least 50 games in that season since 1985

	NAME	BPG	MIN	GP	SEASON	TM	MPG	PPG	RPG	APG	SPG	FGM	FGA	FG%	3PM	3PA	3P%	FTM	FTA	FT%	TS%	OREB	DREB	TPG	PTS	REB	AST	STL	BLK	TOV	PF	+/-
1	Manute Bol M. Bol	2.6	687	53	1986-87	WAS	13.0	2.3	2.7	0.1	0.2	0.9	1.9	46.5	0.0	0.0	0.0	0.5	0.8	69.0	51.5	0.6	2.1	0.6	123	143	3	9	137	34	97
2	Manute Bol M. Bol	2.4	872	56	1990-91	PHI	15.6	1.5	3.6	0.2	0.2	0.6	1.6	40.0	0.0	0.2	11.1	0.2	0.4	57.1	42.8	0.7	2.9	0.7	85	200	13	10	133	37	117
3	Manute Bol M. Bol	2.3	719	60	1987-88	WAS	12.0	1.6	2.8	0.2	0.1	0.7	1.6	44.2	0.0	0.0		0.2	0.4	47.6	45.1	0.7	2.1	0.4	94	169	9	8	139	23	107
4	JaVale McGee J. McGee	1.8	841	54	2012-13	DEN	15.6	7.8	3.9	0.3	0.3	3.3	6.2	53.3	0.0	0.0	100.0	1.2	1.9	62.7	55.6	1.6	2.2	1.1	421	210	17	14	97	62	114	-16
5	Jim McIlvaine J. McIlvaine	1.7	854	56	1996-97	SEA	15.3	2.9	3.6	0.3	0.4	1.2	2.7	45.7	0.0	0.1	0.0	0.5	1.1	40.6	45.8	1.4	2.2	0.7	164	202	14	22	93	37	158	+13
6	Jim McIlvaine J. McIlvaine	1.6	905	65	1997-98	SEA	13.9	2.8	2.9	0.2	0.3	1.1	2.5	43.2	0.0	0.0	0.0	0.6	1.0	60.0	47.0	1.1	1.8	0.6	179	188	12	19	105	39	199	+39
7	Jim McIlvaine J. McIlvaine	1.6	756	63	1995-96	WAS	12.0	1.8	2.3	0.1	0.2	0.6	1.4	39.3	0.0	0.0		0.7	1.2	56.8	46.1	0.7	1.6	0.4	112	144	6	12	99	26	119
8	Joel Przybilla J. Przybilla	1.6	735	54	2001-02	MIL	13.6	2.1	3.1	0.3	0.3	0.8	1.5	54.2	0.0	0.0	0.0	0.5	1.1	43.9	53.2	0.9	2.3	0.6	115	169	14	16	84	31	147	-104
9	Hassan Whiteside H. Whiteside	1.5	770	51	2021-22	UTA	15.1	7.5	6.6	0.3	0.3	3.0	4.5	65.1	0.0	0.0		1.5	2.4	64.2	66.6	2.5	4.1	0.8	381	338	16	14	75	39	128	+136
10	Andrew Lang A. Lang	1.3	642	59	1989-90	PHX	10.9	2.7	2.8	0.2	0.2	1.1	1.8	57.4	0.0	0.0		0.6	0.9	61.8	59.8	0.9	1.9	0.5	158	163	11	14	78	29	116
11	DeSagana Diop D. Diop	1.3	736	50	2005-06	DAL	14.7	1.8	3.5	0.2	0.3	0.8	1.5	50.0	0.0	0.0	0.0	0.3	0.6	50.0	51.1	1.5	2.0	0.4	92	174	11	17	66	22	156	+17
12	Mo Bamba M. Bamba	1.3	793	58	2019-20	ORL	13.7	5.0	4.7	0.6	0.3	2.0	4.4	45.5	0.5	1.7	30.9	0.5	0.7	66.7	53.0	1.6	3.1	0.6	292	275	37	20	76	36	106	+10
13	Chris Andersen C. Andersen	1.3	766	60	2003-04	DEN	12.8	2.6	3.4	0.5	0.4	0.9	2.4	38.6	0.0	0.0	0.0	0.7	1.2	60.0	43.8	1.0	2.5	0.6	154	206	27	23	77	34	96	-150
14	Steven Hunter S. Hunter	1.2	809	66	2004-05	PHX	12.3	3.8	2.6	0.1	0.0	1.4	2.4	58.4	0.0	0.0	0.0	0.9	1.9	48.4	57.5	1.2	1.5	0.5	250	174	5	2	82	33	97	-83
15	Calvin Booth C. Booth	1.2	740	53	2003-04	SEA	14.0	3.6	3.2	0.3	0.2	1.4	3.2	44.4	0.0	0.0		0.7	0.9	81.3	49.7	0.8	2.4	0.6	191	167	15	12	65	30	108	-94
16	Wayne Cooper W. Cooper	1.2	1,053	74	1989-90	POR	14.2	3.5	4.2	0.6	0.2	1.6	3.7	44.2	0.0	0.0	0.0	0.3	0.4	62.5	45.5	1.4	2.8	0.5	262	310	42	17	89	37	194
17	Nerlens Noel N. Noel	1.2	892	70	2018-19	OKC	12.7	4.3	3.7	0.5	0.8	1.8	3.0	59.0	0.0	0.0		0.7	1.1	67.6	61.4	1.5	2.3	0.6	298	261	36	53	83	44	143	-102
18	Greg Ostertag G. Ostertag	1.2	801	54	2000-01	UTA	14.8	3.1	4.5	0.2	0.2	1.1	2.7	42.4	0.0	0.0	50.0	0.8	1.4	57.7	47.1	1.8	2.6	0.6	168	242	11	13	64	34	121	+17
19	Ervin Johnson E. Johnson	1.2	729	50	1995-96	SEA	14.6	3.5	3.6	0.4	0.4	1.4	3.1	46.4	0.0	0.0		0.6	1.0	59.6	49.2	1.1	2.5	1.0	173	180	20	19	58	48	142
20	Mark West M. West	1.1	844	67	1993-94	PHX	12.6	3.1	2.9	0.3	0.3	1.3	2.6	51.7	0.0	0.0		0.5	1.1	43.1	51.3	1.1	1.8	0.9	211	196	20	19	76	57	158
21	Jerome James J. James	1.1	860	61	2004-05	SEA	14.1	3.6	2.6	0.2	0.3	1.6	3.3	47.3	0.0	0.0		0.5	0.6	74.4	50.2	0.9	1.7	1.1	221	159	11	17	68	65	201	-63
22	George Johnson G. Johnson	1.1	618	57	1984-85	NJN	10.8	1.4	2.5	0.3	0.2	0.6	1.2	50.0	0.0	0.0	100.0	0.2	0.3	81.3	54.8	1.0	1.5	0.5	80	144	17	14	63	28	122
23	JaVale McGee J. McGee	1.1	789	53	2019-20	LAL	14.9	5.9	5.1	0.4	0.5	2.5	4.1	62.5	0.0	0.1	40.0	0.8	1.2	67.2	64.4	1.7	3.4	0.7	313	272	23	25	58	36	119	+91
24	Ekpe Udoh E. Udoh	1.1	602	55	2017-18	UTA	10.9	2.0	2.0	0.7	0.5	0.7	1.5	47.1	0.0	0.0	0.0	0.6	0.8	70.5	53.2	1.0	1.0	0.3	111	111	41	28	60	18	87	+67
25	John Salley J. Salley	1.1	793	55	1986-87	DET	14.4	3.6	2.7	0.5	0.4	1.2	2.7	46.6	0.0	0.0	0.0	1.1	1.8	61.6	52.0	1.0	1.7	0.8	197	147	28	23	60	44	170