Manute Bol has the most games with 12+ blocks in a season, with 3 games in 1986-87.

Interpreted as:

most 12 or more block games by a player in season

	NAME	GP	BLK	SEASON	TM	MPG	PPG	RPG	APG	SPG	BPG	FGM	FGA	FG%	3PM	3PA	3P%	FTM	FTA	FT%	TS%	OREB	DREB	TPG	MIN	PTS	REB	AST	STL	TOV	PF	+/-
1	Manute Bol M. Bol	3	39	1986-87	WAS	37.7	7.3	13.0	0.7	1.0	13.0	3.7	6.0	61.1	0.0	0.0		0.0	0.7	0.0	58.3	2.7	10.3	2.3	113	22	39	2	3	7	13
2	Manute Bol M. Bol	2	27	1985-86	WAS	45.5	11.0	6.5	0.5	0.0	13.5	3.5	7.5	46.7	0.0	0.0		4.0	7.0	57.1	52.0	3.5	3.0	0.5	91	22	13	1	0	1	7
3	Mark Eaton M. Eaton	2	26	1984-85	UTA	43.0	10.5	17.5	2.5	0.0	13.0	2.5	10.0	25.0	0.0	0.0		5.5	9.0	61.1	37.6	2.5	15.0	3.5	86	21	35	5	0	7	5
4	Hassan Whiteside H. Whiteside	1	12	2014-15	MIA	24.6	14.0	13.0	0.0	0.0	12.0	6.0	10.0	60.0	0.0	0.0		2.0	4.0	50.0	59.5	6.0	7.0	0.0	25	14	13	0	0	0	4	+5
5	JaVale McGee J. McGee	1	12	2010-11	WAS	39.4	11.0	12.0	1.0	0.0	12.0	5.0	14.0	35.7	0.0	0.0		1.0	3.0	33.3	35.9	3.0	9.0	2.0	39	11	12	1	0	2	4	-15
6	Keon Clark K. Clark	1	12	2000-01	TOR	28.0	13.0	8.0	2.0	1.0	12.0	4.0	11.0	36.4	0.0	1.0	0.0	5.0	5.0	100.0	49.2	2.0	6.0	0.0	28	13	8	2	1	0	0	+27
7	Shawn Bradley S. Bradley	1	13	1997-98	DAL	38.0	22.0	22.0	0.0	1.0	13.0	6.0	15.0	40.0	0.0	0.0		10.0	10.0	100.0	56.7	5.0	17.0	2.0	38	22	22	0	1	2	3	+17
8	Vlade Divac V. Divac	1	12	1996-97	CHA	41.0	18.0	9.0	2.0	0.0	12.0	9.0	14.0	64.3	0.0	0.0		0.0	0.0		64.3	2.0	7.0	3.0	41	18	9	2	0	3	6	+25
9	Shawn Bradley S. Bradley	1	12	1995-96	NJN	37.0	11.0	10.0	2.0	1.0	12.0	3.0	14.0	21.4	0.0	0.0		5.0	5.0	100.0	34.0	5.0	5.0	2.0	37	11	10	2	1	2	4
10	Shaquille O'Neal S. O'Neal	1	15	1993-94	ORL	36.0	24.0	28.0	3.0	1.0	15.0	12.0	19.0	63.2	0.0	0.0		0.0	1.0	0.0	61.7	10.0	18.0	3.0	36	24	28	3	1	3	4
11	Dikembe Mutombo D. Mutombo	1	12	1992-93	DEN	43.0	16.0	21.0	2.0	1.0	12.0	5.0	15.0	33.3	0.0	0.0		6.0	11.0	54.5	40.3	9.0	12.0	1.0	43	16	21	2	1	1	3
12	David Robinson D. Robinson	1	12	1989-90	SAS	36.0	24.0	12.0	2.0	3.0	12.0	8.0	13.0	61.5	0.0	0.0		8.0	9.0	88.9	70.8	3.0	9.0	4.0	36	24	12	2	3	4	2
13	Manute Bol M. Bol	1	13	1989-90	GSW	33.0	2.0	11.0	0.0	0.0	13.0	1.0	7.0	14.3	0.0	1.0	0.0	0.0	0.0		14.3	1.0	10.0	0.0	33	2	11	0	0	0	4
14	Hakeem Olajuwon H. Olajuwon	1	12	1989-90	HOU	42.0	24.0	21.0	2.0	5.0	12.0	10.0	22.0	45.5	0.0	0.0		4.0	9.0	44.4	46.2	7.0	14.0	5.0	42	24	21	2	5	5	5
15	Manute Bol M. Bol	1	12	1988-89	GSW	30.0	7.0	6.0	0.0	1.0	12.0	3.0	5.0	60.0	1.0	1.0	100.0	0.0	0.0		70.0	2.0	4.0	1.0	30	7	6	0	1	1	2
16	Mark Eaton M. Eaton	1	14	1988-89	UTA	41.0	8.0	9.0	1.0	2.0	14.0	3.0	7.0	42.9	0.0	0.0		2.0	2.0	100.0	50.8	5.0	4.0	3.0	41	8	9	1	2	3	4
17	Hakeem Olajuwon H. Olajuwon	1	12	1986-87	HOU	53.0	38.0	17.0	6.0	7.0	12.0	14.0	29.0	48.3	0.0	0.0		10.0	14.0	71.4	54.0	10.0	7.0	4.0	53	38	17	6	7	4	5
18	Mark Eaton M. Eaton	1	12	1986-87	UTA	38.0	15.0	20.0	2.0	3.0	12.0	4.0	18.0	22.2	0.0	0.0		7.0	10.0	70.0	33.5	8.0	12.0	1.0	38	15	20	2	3	1	4
19	Mark Eaton M. Eaton	1	12	1983-84	UTA	30.0	6.0	6.0	2.0	0.0	12.0	2.0	7.0	28.6	0.0	0.0		2.0	2.0	100.0	38.1	1.0	5.0	0.0	30	6	6	2	0	0	3
20	Ralph Sampson R. Sampson	1	13	1983-84	HOU	49.0	28.0	18.0	5.0	0.0	13.0	11.0	18.0	61.1	0.0	0.0		6.0	9.0	66.7	63.8	6.0	12.0	6.0	49	28	18	5	0	6	4
21	Darryl Dawkins D. Dawkins	1	13	1983-84	NJN	41.0	17.0	8.0	2.0	2.0	13.0	7.0	13.0	53.8	0.0	0.0		3.0	6.0	50.0	54.3	1.0	7.0	3.0	41	17	8	2	2	3	5