Hassan Whiteside had the most games for the Heat with 18+ rebounds, with 38 games.

Interpreted as:

most 18+ rebound regular-season games by a heat player

	NAME	GP	REB	MPG	PPG	RPG	APG	SPG	BPG	FGM	FGA	FG%	3PM	3PA	3P%	FTM	FTA	FT%	TS%	OREB	DREB	TPG	MIN	PTS	AST	STL	BLK	TOV	PF	+/-
1	Hassan Whiteside H. Whiteside	38	765	33.4	18.8	20.1	0.6	0.7	2.5	7.8	13.2	58.9	0.0	0.1	25.0	3.3	5.5	59.8	60.4	5.9	14.3	2.2	1,267	716	21	27	94	84	102	+115
2	Rony Seikaly R. Seikaly	32	655	41.7	19.9	20.5	1.8	0.8	1.7	7.4	15.6	47.7	0.0	0.1	50.0	5.0	7.7	65.0	52.5	6.6	13.9	3.3	1,335	637	58	25	53	104	113
3	Alonzo Mourning A. Mourning	10	191	41.4	24.7	19.1	2.1	0.5	3.4	8.7	16.3	53.4	0.0	0.0		7.3	10.8	67.6	58.7	7.6	11.5	3.1	414	247	21	5	34	31	31	-31
4	Kevin Willis K. Willis	7	138	41.9	21.4	19.7	1.3	1.1	0.6	8.6	17.3	49.6	0.3	0.3	100.0	4.0	6.4	62.2	53.3	7.4	12.3	3.4	293	150	9	8	4	24	26
5	Bam Adebayo B. Adebayo	6	118	38.2	19.3	19.7	5.2	1.7	1.2	7.0	16.0	43.8	0.3	1.0	33.3	5.0	6.5	76.9	51.3	4.0	15.7	3.5	229	116	31	10	7	21	12	+50
6	Shaquille O'Neal S. O'Neal	4	75	39.3	27.0	18.8	3.3	0.3	2.5	10.8	18.8	57.3	0.0	0.0		5.5	13.3	41.5	54.9	5.5	13.3	3.8	157	108	13	1	10	15	16	+33
7	Lamar Odom L. Odom	4	73	45.0	19.8	18.3	6.0	1.0	1.5	6.8	16.3	41.5	0.3	1.5	16.7	6.0	9.3	64.9	48.6	3.8	14.5	3.0	180	79	24	4	6	12	14	+5
8	Brian Grant B. Grant	4	77	42.5	16.5	19.3	1.5	1.0	1.3	6.8	13.0	51.9	0.0	0.0		3.0	5.3	57.1	53.9	5.0	14.3	1.3	170	66	6	4	5	5	14	+28
9	Anthony Mason A. Mason	3	54	43.7	18.7	18.0	2.3	0.7	0.3	4.7	10.0	46.7	0.0	0.0		9.3	12.3	75.7	60.5	3.7	14.3	0.7	131	56	7	2	1	2	9	+19
10	Kel'el Ware K. Ware	2	38	33.6	17.0	19.0	0.5	0.5	2.0	7.0	14.0	50.0	1.5	3.0	50.0	1.5	1.5	100.0	58.0	6.5	12.5	1.5	67	34	1	1	4	3	5	+21
11	Jimmy Butler III J. Butler III	2	37	43.0	27.5	18.5	10.0	2.0	0.5	10.0	19.5	51.3	1.0	3.0	33.3	6.5	9.5	68.4	58.1	4.5	14.0	1.5	86	55	20	4	1	3	0	+43
12	Udonis Haslem U. Haslem	2	36	39.9	10.5	18.0	0.5	1.5	0.5	3.5	8.5	41.2	0.0	0.0		3.5	6.0	58.3	47.1	4.0	14.0	2.5	80	21	1	3	1	5	7	+5
13	P.J. Brown	2	38	38.0	9.5	19.0	3.0	0.0	1.5	4.5	12.0	37.5	0.0	0.0		0.5	1.5	33.3	37.5	6.5	12.5	2.0	76	19	6	0	3	4	5	+31
14	Billy Thompson B. Thompson	2	36	41.5	16.5	18.0	1.5	0.0	1.0	7.5	12.0	62.5	0.0	0.0		1.5	4.0	37.5	60.0	8.5	9.5	2.5	83	33	3	0	2	5	8
15	Willie Reed W. Reed	1	18	32.2	22.0	18.0	2.0	1.0	2.0	11.0	16.0	68.8	0.0	0.0		0.0	0.0		68.8	8.0	10.0	1.0	32	22	2	1	2	1	2	+6
16	Chris Bosh C. Bosh	1	18	42.8	24.0	18.0	1.0	1.0	1.0	9.0	14.0	64.3	1.0	2.0	50.0	5.0	6.0	83.3	72.1	3.0	15.0	5.0	43	24	1	1	1	5	4	+8
17	Jamaal Magloire J. Magloire	1	19	29.0	8.0	19.0	0.0	2.0	0.0	3.0	4.0	75.0	0.0	0.0		2.0	4.0	50.0	69.4	5.0	14.0	1.0	29	8	0	2	0	1	4	+22
18	Shawn Marion S. Marion	1	18	47.5	23.0	18.0	3.0	2.0	0.0	11.0	26.0	42.3	0.0	2.0	0.0	1.0	1.0	100.0	43.5	6.0	12.0	1.0	48	23	3	2	0	1	1	-5
19	Dorell Wright D. Wright	1	18	42.0	19.0	18.0	1.0	0.0	3.0	8.0	14.0	57.1	1.0	3.0	33.3	2.0	4.0	50.0	60.3	5.0	13.0	0.0	42	19	1	0	3	0	2	-8
20	Isaac Austin I. Austin	1	22	43.0	33.0	22.0	1.0	0.0	2.0	12.0	29.0	41.4	0.0	0.0		9.0	9.0	100.0	50.1	10.0	12.0	4.0	43	33	1	0	2	4	3	+4
21	Chris Gatling C. Gatling	1	18	35.0	22.0	18.0	1.0	0.0	0.0	9.0	16.0	56.3	0.0	0.0		4.0	4.0	100.0	61.9	5.0	13.0	1.0	35	22	1	0	0	1	3
22	Grant Long G. Long	1	20	50.0	10.0	20.0	1.0	1.0	0.0	5.0	10.0	50.0	0.0	1.0	0.0	0.0	0.0		50.0	7.0	13.0	4.0	50	10	1	1	0	4	6