Tennis Overhand Serve: Normative Ranges

This page collects the complete normative reference tables for the tennis overhand serve — the full 5th–95th percentile range for each competition level, drawn from the same normative dataset that backs the Normative Ranges guide. See that page for how to interpret these tables. Each competition-level dataset was built by pooling all valid serve sessions per athlete, selecting the single session closest to that athlete’s overall average across all metrics, then re-analyzing with the latest biomechanical analysis software and removing sessions that failed Uplift’s quality assurance tests. Unlike baseball, the tennis dataset currently only supports Youth, Professional, and Broad (All Levels) populations — College and High School brackets are not yet available.

Youth Sample

Reference dataset built from 50 unique youth athletes (227 valid serve sessions before selecting one representative session per athlete) performing a serve in 2025.

Kinematic Sequence – Forward (Serve Direction) Angular Velocities & Speedups

Prefer higher velocities and speedup factors for better performance.

Variable	5%	10%	25%	50%	75%	90%	95%	Units
Peak Torso Forward Angular Velocity	147	160	184	206	234	256	264	deg/s
Peak Upper Arm Forward Angular Velocity	653	680	805	887	997	1073	1120	deg/s
Peak Forearm Forward Angular Velocity	746	776	858	976	1101	1212	1256	deg/s
Forward Trunk Arm Speedup	3.22	3.38	3.80	4.32	4.91	5.45	5.88	ratio
Forward Upper Arm Forearm Speedup	0.80	0.85	0.97	1.09	1.25	1.41	1.54	ratio

Kinematic Sequence – Twist Angular Velocities & Speedups

Prefer higher velocities and speedup factors for better performance.

Variable	5%	10%	25%	50%	75%	90%	95%	Units
Peak Pelvis Twist Angular Velocity	190	215	284	366	446	495	512	deg/s
Peak Torso Twist Angular Velocity	253	282	335	379	417	450	473	deg/s
Peak Upper Arm Twist Angular Velocity	214	270	333	411	495	566	628	deg/s
Twist Trunk Arm Speedup	0.60	0.71	0.89	1.10	1.35	1.60	1.75	ratio
Twist Pelvis Torso Speedup	0.70	0.78	0.87	1.05	1.26	1.58	1.71	ratio

Loading Phase

Deviations from center indicate atypical positioning, not necessarily poor performance.

Variable	5%	10%	25%	50%	75%	90%	95%	Units
Loading Phase Max Knee Flexion Front Leg	50	53	59	68	78	85	89	deg
Loading Phase Max Knee Flexion Back Leg	42	53	65	70	81	87	93	deg
Loading Phase Trunk Tilt	-29	-25	-21	-15	-11	-6	-1	deg
Loading Phase Pelvis Tilt	-9	-8	-6	-3	0	1	2	deg
Loading Phase Shoulder Hip Separation	0	3	11	19	29	35	40	deg
Loading Phase Ball Release Angle	76	95	105	122	137	152	156	deg
Trunk Coil	-142	-138	-130	-119	-111	-104	-99	deg
Pelvis Coil	-132	-129	-122	-113	-108	-99	-87	deg
Trunk Stretch	124	137	151	160	171	181	186	deg
Pelvis Stretch	86	102	118	130	144	158	164	deg
Release Phase Elbow Angle	1	2	7	19	27	40	44	deg
Max Front Knee Valgus (Normalized)	-0.041	-0.036	-0.029	-0.021	-0.016	-0.009	-0.006	× height
Max Back Knee Valgus (Normalized)	-0.023	-0.021	-0.017	-0.011	-0.006	-0.004	-0.003	× height

Cocking and Acceleration Phase

Deviations from center indicate atypical positioning, not necessarily poor performance.

Variable	5%	10%	25%	50%	75%	90%	95%	Units
Cocking Phase Max Shoulder External Rotation	154	163	170	179	188	194	199	deg
Cocking Phase Shoulder Hyperangulation	136	141	146	155	163	172	178	deg
Cocking Phase Max X Factor	-6	0	9	17	26	35	38	deg
Cocking Phase Shoulder Horizontal Abduction	61	68	75	87	98	102	104	deg
Acceleration Phase Max Knee Extension Velocity Front Leg	238	269	298	345	381	414	431	deg/s
Acceleration Phase Max Knee Extension Velocity Back Leg	182	223	304	351	394	420	433	deg/s
Acceleration Phase Max Elbow Extension Velocity	852	920	1037	1155	1251	1329	1422	deg/s

Contact Phase

Deviations from center indicate atypical positioning, not necessarily poor performance.

Variable	5%	10%	25%	50%	75%	90%	95%	Units
Contact Phase Elbow Flexion	29	31	39	46	53	60	63	deg
Contact Phase Shoulder Abduction	103	106	113	123	129	135	139	deg
Contact Phase X Factor	-8	-5	-1	3	8	14	16	deg
Contact Phase Trunk Tilt	29	31	34	38	42	46	47	deg
Time to Contact	0.60	0.72	0.80	0.91	1.00	1.11	1.17	s
Contact Phase Trunk Flexion	1	4	10	14	20	30	32	deg
Contact Phase Trunk Rotation	-40	-38	-33	-24	-12	-5	-2	deg
Contact Phase Pelvis Rotation	-43	-42	-38	-33	-25	-19	-14	deg
Contact Phase Wrist Height (Normalized)	1.14	1.16	1.19	1.22	1.24	1.27	1.28	× height
Contact Phase Wrist Velocity (Normalized)	761	800	829	858	889	921	932	unconfirmed

Landing Phase

Deviations from center indicate atypical positioning, not necessarily poor performance.

Variable	5%	10%	25%	50%	75%	90%	95%	Units
Finish Phase Trunk Flexion	35	40	45	50	55	63	67	deg
Finish Phase Trunk Tilt	-15	-12	-7	-1	4	8	13	deg
Forward Displacement (Normalized)	0.072	0.151	0.270	0.361	0.440	0.509	0.538	× height
Open-Side Displacement (Normalized)	-0.033	0.000	0.089	0.176	0.263	0.346	0.384	× height
Vertical Displacement (Normalized)	0.095	0.112	0.129	0.148	0.168	0.192	0.202	× height

Professional Sample

Reference dataset built from 32 unique professional athletes (300 valid serve sessions before selecting one representative session per athlete) performing a serve in 2025.

Kinematic Sequence – Forward (Serve Direction) Angular Velocities & Speedups

Prefer higher velocities and speedup factors for better performance.

Variable	5%	10%	25%	50%	75%	90%	95%	Units
Peak Torso Forward Angular Velocity	168	180	198	216	237	263	277	deg/s
Peak Upper Arm Forward Angular Velocity	696	764	837	924	1031	1088	1116	deg/s
Peak Forearm Forward Angular Velocity	637	772	921	1041	1142	1281	1325	deg/s
Forward Trunk Arm Speedup	3.29	3.38	3.74	4.22	4.81	5.27	5.42	ratio
Forward Upper Arm Forearm Speedup	0.57	0.76	0.98	1.16	1.31	1.45	1.54	ratio

Kinematic Sequence – Twist Angular Velocities & Speedups

Prefer higher velocities and speedup factors for better performance.

Variable	5%	10%	25%	50%	75%	90%	95%	Units
Peak Pelvis Twist Angular Velocity	190	253	334	382	414	446	461	deg/s
Peak Torso Twist Angular Velocity	259	275	316	353	391	425	441	deg/s
Peak Upper Arm Twist Angular Velocity	182	225	304	381	462	572	620	deg/s
Twist Trunk Arm Speedup	0.56	0.69	0.90	1.07	1.28	1.55	1.77	ratio
Twist Pelvis Torso Speedup	0.70	0.74	0.84	0.94	1.07	1.48	1.75	ratio

Loading Phase

Deviations from center indicate atypical positioning, not necessarily poor performance.

Variable	5%	10%	25%	50%	75%	90%	95%	Units
Loading Phase Max Knee Flexion Front Leg	53	56	61	67	77	86	88	deg
Loading Phase Max Knee Flexion Back Leg	56	62	71	78	85	89	93	deg
Loading Phase Trunk Tilt	-30	-28	-26	-23	-19	-14	-12	deg
Loading Phase Pelvis Tilt	-11	-9	-7	-5	-4	-1	1	deg
Loading Phase Shoulder Hip Separation	5	7	10	16	23	31	34	deg
Loading Phase Ball Release Angle	71	89	100	116	132	144	157	deg
Trunk Coil	-139	-136	-129	-122	-116	-109	-104	deg
Pelvis Coil	-130	-129	-125	-117	-111	-101	-88	deg
Trunk Stretch	128	135	146	155	162	170	173	deg
Pelvis Stretch	94	103	113	125	135	142	146	deg
Release Phase Elbow Angle	2	5	14	27	36	41	45	deg
Max Front Knee Valgus (Normalized)	-0.039	-0.035	-0.028	-0.022	-0.014	-0.008	-0.006	× height
Max Back Knee Valgus (Normalized)	-0.021	-0.019	-0.015	-0.011	-0.007	-0.005	-0.004	× height

Cocking and Acceleration Phase

Deviations from center indicate atypical positioning, not necessarily poor performance.

Variable	5%	10%	25%	50%	75%	90%	95%	Units
Cocking Phase Max Shoulder External Rotation	169	172	180	187	192	196	199	deg
Cocking Phase Shoulder Hyperangulation	138	145	154	160	168	176	184	deg
Cocking Phase Max X Factor	4	6	9	16	23	31	33	deg
Cocking Phase Shoulder Horizontal Abduction	84	88	93	98	104	109	111	deg
Acceleration Phase Max Knee Extension Velocity Front Leg	265	281	314	343	393	435	444	deg/s
Acceleration Phase Max Knee Extension Velocity Back Leg	238	262	326	367	404	439	465	deg/s
Acceleration Phase Max Elbow Extension Velocity	787	913	1058	1126	1192	1283	1338	deg/s

Contact Phase

Deviations from center indicate atypical positioning, not necessarily poor performance.

Variable	5%	10%	25%	50%	75%	90%	95%	Units
Contact Phase Elbow Flexion	24	27	31	37	44	49	54	deg
Contact Phase Shoulder Abduction	118	123	128	135	142	146	148	deg
Contact Phase X Factor	-4	-2	2	5	10	15	19	deg
Contact Phase Trunk Tilt	24	26	30	33	36	40	42	deg
Time to Contact	0.30	0.65	0.86	0.97	1.04	1.10	1.15	s
Contact Phase Trunk Flexion	-2	-1	4	9	12	16	19	deg
Contact Phase Trunk Rotation	-55	-51	-39	-32	-25	-20	-12	deg
Contact Phase Pelvis Rotation	-71	-59	-45	-40	-35	-30	-25	deg
Contact Phase Wrist Height (Normalized)	1.19	1.21	1.23	1.25	1.27	1.29	1.30	× height
Contact Phase Wrist Velocity (Normalized)	718	744	807	835	860	877	890	unconfirmed

Landing Phase

Deviations from center indicate atypical positioning, not necessarily poor performance.

Variable	5%	10%	25%	50%	75%	90%	95%	Units
Finish Phase Trunk Flexion	27	32	39	46	52	58	61	deg
Finish Phase Trunk Tilt	-15	-12	-7	-1	6	11	15	deg
Forward Displacement (Normalized)	0.163	0.205	0.269	0.370	0.455	0.531	0.616	× height
Open-Side Displacement (Normalized)	-0.032	0.001	0.060	0.167	0.291	0.371	0.433	× height
Vertical Displacement (Normalized)	0.114	0.118	0.130	0.158	0.180	0.203	0.255	× height

Broad Sample (All Levels)

Reference dataset built from 82 unique athletes (527 valid serve sessions before selecting one representative session per athlete) performing a serve in 2025, pooled across all competition levels.

Kinematic Sequence – Forward (Serve Direction) Angular Velocities & Speedups

Prefer higher velocities and speedup factors for better performance.

Variable	5%	10%	25%	50%	75%	90%	95%	Units
Peak Torso Forward Angular Velocity	147	165	190	211	235	259	270	deg/s
Peak Upper Arm Forward Angular Velocity	651	723	825	905	1018	1085	1117	deg/s
Peak Forearm Forward Angular Velocity	676	764	875	1013	1130	1251	1307	deg/s
Forward Trunk Arm Speedup	3.27	3.38	3.76	4.29	4.89	5.42	5.84	ratio
Forward Upper Arm Forearm Speedup	0.71	0.80	0.97	1.13	1.30	1.45	1.55	ratio

Kinematic Sequence – Twist Angular Velocities & Speedups

Prefer higher velocities and speedup factors for better performance.

Variable	5%	10%	25%	50%	75%	90%	95%	Units
Peak Pelvis Twist Angular Velocity	190	224	305	376	422	462	494	deg/s
Peak Torso Twist Angular Velocity	256	279	324	364	401	435	461	deg/s
Peak Upper Arm Twist Angular Velocity	191	238	320	397	492	594	660	deg/s
Twist Trunk Arm Speedup	0.59	0.70	0.90	1.09	1.32	1.66	1.92	ratio
Twist Pelvis Torso Speedup	0.70	0.76	0.85	0.98	1.18	1.56	1.73	ratio

Loading Phase

Deviations from center indicate atypical positioning, not necessarily poor performance.

Variable	5%	10%	25%	50%	75%	90%	95%	Units
Loading Phase Max Knee Flexion Front Leg	51	54	60	68	78	85	89	deg
Loading Phase Max Knee Flexion Back Leg	52	56	67	75	84	89	93	deg
Loading Phase Trunk Tilt	-29	-28	-25	-20	-14	-9	-5	deg
Loading Phase Pelvis Tilt	-11	-9	-7	-5	-2	0	2	deg
Loading Phase Shoulder Hip Separation	2	5	10	17	25	34	37	deg
Loading Phase Ball Release Angle	71	91	104	118	135	149	157	deg
Trunk Coil	-141	-138	-129	-122	-113	-106	-100	deg
Pelvis Coil	-132	-129	-124	-116	-109	-99	-86	deg
Trunk Stretch	127	136	147	156	166	174	180	deg
Pelvis Stretch	86	102	115	127	138	148	155	deg
Release Phase Elbow Angle	1	3	11	22	34	41	47	deg
Max Front Knee Valgus (Normalized)	-0.040	-0.035	-0.028	-0.021	-0.014	-0.008	-0.006	× height
Max Back Knee Valgus (Normalized)	-0.022	-0.020	-0.015	-0.011	-0.007	-0.005	-0.004	× height

Cocking and Acceleration Phase

Deviations from center indicate atypical positioning, not necessarily poor performance.

Variable	5%	10%	25%	50%	75%	90%	95%	Units
Cocking Phase Max Shoulder External Rotation	155	167	174	183	191	196	199	deg
Cocking Phase Shoulder Hyperangulation	132	141	149	158	165	174	181	deg
Cocking Phase Max X Factor	0	3	9	17	24	33	36	deg
Cocking Phase Shoulder Horizontal Abduction	60	72	86	95	101	107	110	deg
Acceleration Phase Max Knee Extension Velocity Front Leg	251	272	307	345	389	428	440	deg/s
Acceleration Phase Max Knee Extension Velocity Back Leg	211	250	312	359	396	430	448	deg/s
Acceleration Phase Max Elbow Extension Velocity	787	902	1049	1136	1220	1312	1352	deg/s

Contact Phase

Deviations from center indicate atypical positioning, not necessarily poor performance.

Variable	5%	10%	25%	50%	75%	90%	95%	Units
Contact Phase Elbow Flexion	25	28	34	41	49	57	63	deg
Contact Phase Shoulder Abduction	106	112	122	129	138	144	147	deg
Contact Phase X Factor	-5	-3	1	5	10	15	18	deg
Contact Phase Trunk Tilt	23	27	31	35	39	43	46	deg
Time to Contact	0.31	0.67	0.82	0.94	1.03	1.12	1.18	s
Contact Phase Trunk Flexion	-2	1	6	10	15	21	28	deg
Contact Phase Trunk Rotation	-53	-45	-37	-30	-21	-10	-5	deg
Contact Phase Pelvis Rotation	-66	-51	-42	-37	-31	-23	-19	deg
Contact Phase Wrist Height (Normalized)	1.15	1.18	1.21	1.24	1.26	1.28	1.29	× height
Contact Phase Wrist Velocity (Normalized)	704	745	813	843	869	899	917	unconfirmed

Landing Phase

Deviations from center indicate atypical positioning, not necessarily poor performance.

Variable	5%	10%	25%	50%	75%	90%	95%	Units
Finish Phase Trunk Flexion	29	35	42	48	55	61	65	deg
Finish Phase Trunk Tilt	-16	-12	-7	-1	5	11	14	deg
Forward Displacement (Normalized)	0.065	0.160	0.261	0.362	0.446	0.519	0.574	× height
Open-Side Displacement (Normalized)	-0.037	0.000	0.073	0.169	0.277	0.354	0.411	× height
Vertical Displacement (Normalized)	0.108	0.117	0.130	0.154	0.179	0.200	0.237	× height

Get Started

Resources

Biomechanics

Tennis Overhand Serve: Normative Ranges

Youth Sample

Kinematic Sequence – Forward (Serve Direction) Angular Velocities & Speedups

Kinematic Sequence – Twist Angular Velocities & Speedups

Loading Phase

Cocking and Acceleration Phase

Contact Phase

Landing Phase

Professional Sample

Kinematic Sequence – Forward (Serve Direction) Angular Velocities & Speedups

Kinematic Sequence – Twist Angular Velocities & Speedups

Loading Phase

Cocking and Acceleration Phase

Contact Phase

Landing Phase

Broad Sample (All Levels)

Kinematic Sequence – Forward (Serve Direction) Angular Velocities & Speedups

Kinematic Sequence – Twist Angular Velocities & Speedups

Loading Phase

Cocking and Acceleration Phase

Contact Phase

Landing Phase

​Youth Sample

​Kinematic Sequence – Forward (Serve Direction) Angular Velocities & Speedups

​Kinematic Sequence – Twist Angular Velocities & Speedups

​Loading Phase

​Cocking and Acceleration Phase

​Contact Phase

​Landing Phase

​Professional Sample

​Kinematic Sequence – Forward (Serve Direction) Angular Velocities & Speedups

​Kinematic Sequence – Twist Angular Velocities & Speedups

​Loading Phase

​Cocking and Acceleration Phase

​Contact Phase

​Landing Phase

​Broad Sample (All Levels)

​Kinematic Sequence – Forward (Serve Direction) Angular Velocities & Speedups

​Kinematic Sequence – Twist Angular Velocities & Speedups

​Loading Phase

​Cocking and Acceleration Phase

​Contact Phase

​Landing Phase

Youth Sample

Kinematic Sequence – Forward (Serve Direction) Angular Velocities & Speedups

Kinematic Sequence – Twist Angular Velocities & Speedups

Loading Phase

Cocking and Acceleration Phase

Contact Phase

Landing Phase

Professional Sample

Kinematic Sequence – Forward (Serve Direction) Angular Velocities & Speedups

Kinematic Sequence – Twist Angular Velocities & Speedups

Loading Phase

Cocking and Acceleration Phase

Contact Phase

Landing Phase

Broad Sample (All Levels)

Kinematic Sequence – Forward (Serve Direction) Angular Velocities & Speedups

Kinematic Sequence – Twist Angular Velocities & Speedups

Loading Phase

Cocking and Acceleration Phase

Contact Phase

Landing Phase