Table 2.

Youth pitchers speed and distance: at-risk athletes.^a

Age (y)	Average		1 SD		2 SD		3 SD		4 SD		5 SD
	mph	feet	mph	feet	mph	feet	mph	feet	mph	feet	mph	feet
8	40	95	43	109	47	123	50	137	54	151	57	165
9	43	105	47	124	51	142	55	159	59	167	63	185
10	46	123	50	140	54	157	58	174	62	174	66	191
11	48	135	52	157	56	175	60	195	64	215	68	235
12	50	141	55	166	60	191	65	216	70	241	75	266
13	54	164	59	188	64	212	69	236	74	261	79	286
14	60	196	66	225	72	254	78	283	84	312	90	341

^aReprinted with permission by Lippincott Williams and Wilkins.3 Three standard deviations (yellow), 26 athletes out of 10 000; 4 standard deviations (orange), 1 out of 100 000; 5 standard deviations (red), 1 out of 1 000 000.