centers with 19 rpg in single season since 195 before 21years old

Bill Russell was 22 years old when getting 19.0+ rebounds per game in his rookie season in 1956-57.

Interpreted as:

centers with 19 or higher rpg in single season since 195 before 21years old

	NAME	Age	RPG	SEASON	TM	GP	MPG	PPG	APG	FGM	FGA	FG%	FTM	FTA	FT%	TS%	MIN	PTS	REB	AST	PF
1	Bill Russell B. Russell	22	19.6	1956-57	BOS	48	35.3	14.7	1.8	5.8	13.5	42.7	3.2	6.4	49.2	45.0	1,695	706	943	88	143
2	Bill Russell B. Russell	23	22.7	1957-58	BOS	69	38.3	16.6	2.9	6.6	15.0	44.2	3.3	6.4	51.9	46.5	2,640	1,142	1,564	202	181
3	Bill Russell B. Russell	24	23.0	1958-59	BOS	70	42.6	16.7	3.2	6.5	14.2	45.7	3.7	6.1	59.8	49.3	2,979	1,168	1,612	222	161
4	Wilt Chamberlain W. Chamberlain	23	27.0	1959-60	PHI	72	46.4	37.6	2.3	14.8	32.1	46.1	8.0	13.8	58.2	49.3	3,338	2,707	1,941	168	150
5	Bill Russell B. Russell	25	24.0	1959-60	BOS	74	42.5	18.2	3.7	7.5	16.1	46.7	3.2	5.3	61.2	49.6	3,146	1,350	1,778	277	210
6	Wilt Chamberlain W. Chamberlain	24	27.2	1960-61	PHI	79	47.8	38.4	1.9	15.8	31.1	50.9	6.7	13.3	50.4	51.9	3,773	3,033	2,149	148	130
7	Bill Russell B. Russell	26	23.9	1960-61	BOS	78	44.3	16.9	3.4	6.8	16.0	42.6	3.3	6.0	55.0	45.4	3,458	1,322	1,868	268	155
8	Wilt Chamberlain W. Chamberlain	25	25.7	1961-62	PHI	80	48.5	50.4	2.4	20.0	39.5	50.6	10.4	17.0	61.3	53.6	3,882	4,029	2,052	192	123
9	Bill Russell B. Russell	27	23.6	1961-62	BOS	76	45.2	18.9	4.5	7.6	16.6	45.7	3.8	6.3	59.5	48.9	3,433	1,436	1,790	341	207
10	Wilt Chamberlain W. Chamberlain	26	24.3	1962-63	SFW	80	47.6	44.8	3.4	18.3	34.6	52.8	8.3	13.9	59.3	55.0	3,806	3,586	1,946	275	136
11	Bill Russell B. Russell	28	23.6	1962-63	BOS	78	44.9	16.8	4.5	6.6	15.2	43.2	3.7	6.6	55.5	46.4	3,500	1,309	1,843	348	189
12	Wilt Chamberlain W. Chamberlain	27	22.3	1963-64	SFW	80	46.1	36.9	5.0	15.1	28.7	52.4	6.8	12.7	53.1	53.7	3,689	2,948	1,787	403	182
13	Bill Russell B. Russell	29	24.7	1963-64	BOS	78	44.6	15.0	4.7	6.0	13.8	43.3	3.0	5.5	55.0	46.1	3,482	1,168	1,930	370	190
14	Wilt Chamberlain W. Chamberlain	28	22.9	1964-65	TOT	73	45.2	34.7	3.4	14.6	28.5	51.0	5.6	12.1	46.4	51.3	3,301	2,534	1,673	250	146
15	Bill Russell B. Russell	30	24.1	1964-65	BOS	78	44.4	14.1	5.3	5.5	12.6	43.8	3.1	5.5	57.3	47.2	3,466	1,102	1,878	410	204
16	Wilt Chamberlain W. Chamberlain	29	24.6	1965-66	PHI	79	47.3	33.5	5.2	13.6	25.2	54.0	6.3	12.4	51.3	54.7	3,737	2,649	1,943	414	171
17	Bill Russell B. Russell	31	22.8	1965-66	BOS	78	43.4	12.9	4.8	5.0	12.1	41.5	2.9	5.2	55.1	44.8	3,386	1,005	1,779	371	221
18	Wilt Chamberlain W. Chamberlain	30	24.2	1966-67	PHI	81	45.5	24.1	7.8	9.7	14.2	68.3	4.8	10.8	44.1	63.7	3,682	1,956	1,957	630	143
19	Bill Russell B. Russell	32	21.0	1966-67	BOS	81	40.7	13.3	5.8	4.9	10.7	45.4	3.5	5.8	61.0	50.0	3,297	1,075	1,700	472	258
20	Nate Thurmond N. Thurmond	25	21.3	1966-67	SFW	65	42.5	18.7	2.6	7.2	16.4	43.7	4.3	6.8	62.9	48.0	2,761	1,214	1,382	166	183
21	Wilt Chamberlain W. Chamberlain	31	23.8	1967-68	PHI	82	46.8	24.3	8.6	10.0	16.8	59.5	4.3	11.4	38.0	55.7	3,836	1,992	1,952	702	160
22	Nate Thurmond N. Thurmond	26	22.0	1967-68	SFW	51	43.6	20.5	4.2	7.5	18.2	41.1	5.5	8.6	64.4	46.6	2,222	1,046	1,121	215	137
23	Wilt Chamberlain W. Chamberlain	32	21.1	1968-69	LAL	81	45.3	20.5	4.5	7.9	13.6	58.3	4.7	10.6	44.6	56.4	3,669	1,664	1,712	366	142
24	Bill Russell B. Russell	34	19.3	1968-69	BOS	77	42.7	9.9	4.9	3.6	8.4	43.3	2.6	5.0	52.6	46.7	3,291	762	1,484	374	231
25	Nate Thurmond N. Thurmond	27	19.7	1968-69	SFW	71	45.2	21.5	3.6	8.0	19.6	41.0	5.4	8.7	61.5	45.7	3,208	1,524	1,402	253	171