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Ball/Court Interaction (Page 13) |
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Ball/Court Interaction
Ball Velocity Before and After the Bounce
(You might want to consider opening additional browser windows to view the larger versions of the chart.)
Below we have placed the velocity out chart for all courts and balls next to the horizontal distance travelled to reach maximum height. Again even without expanding the charts its easy to see that velocity out and the distance travelled after the bounce charts look very very similar. You can see a strong correlation between the two.
Velocity Out - Distance
| Court: | Ball: |
Velocity Before Bounce (MPH): |
Velocity After Bounce (MPH): |
Velocity Reduction |
| Green Clay | Wilson US Open | 33 | 20 | 39% |
| Green Clay | Wilson Clay | 34 | 21 | 38% |
| Red Clay | Wilson US Open | 29 | 18 | 38% |
| Red Clay | Roland Garros | 31 | 19 | 39% |
| Hard | US Open | 32 | 20 | 38% |
| Grass | US Open | 35 | 18 | 49% |
| Grass | Wimbledon | 35 | 18 | 49% |
Low Topspin
Velocity Out - Distance
| Court: | Ball: |
Velocity Before Bounce (MPH): |
Velocity After Bounce (MPH): |
Velocity Reduction |
| Green Clay | Wilson US Open | 34 | 23 | 32% |
| Green Clay | Wilson Clay | 33 | 23 | 30% |
| Red Clay | Wilson US Open | 31 | 21 | 32% |
| Red Clay | Roland Garros | 32 | 21 | 34% |
| Hard | US Open | 35 | 24 | 31% |
| Grass | US Open | 38 | 21 | 45% |
| Grass | Wimbledon | 37 | 22 | 41% |
Medium Topspin
Velocity Out - Distance
| Court: | Ball: |
Velocity Before Bounce (MPH): |
Velocity After Bounce (MPH): |
Velocity Reduction |
| Green Clay | Wilson US Open | -NA- | -NA- | -NA- |
| Green Clay | Wilson Clay | 36 | 27 | 25% |
| Red Clay | Wilson US Open | 35 | 26 | 26% |
| Red Clay | Roland Garros | -NA- | -NA- | -NA- |
| Hard | US Open | 37 | 28 | 24% |
| Grass | US Open | 39 | 24 | 38% |
| Grass | Wimbledon | 39 | 26 | 33% |
Heavy Topspin
Velocity Out - Distance
| Court: | Ball: |
Velocity Before Bounce (MPH): |
Velocity After Bounce (MPH): |
Velocity Reduction |
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| Green Clay | Wilson US Open | 37 | 31 | 16% | |
| Green Clay | Wilson Clay | 37 | 32 | 14% | |
| Red Clay | Wilson US Open | 36 | 30 | 17% | |
| Red Clay | Roland Garros | 35 | 29 | 17% | |
| Hard | US Open | 35 | 31 | 11% | |
| Grass | US Open | 39 | 28 | 28% | |
| Grass | Wimbledon | 41 | 30 | 27% |
Medium Underspin
Velocity Out - Distance
| Court: | Ball: |
Velocity Before Bounce (MPH): |
Velocity After Bounce (MPH): |
Velocity Reduction |
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| Green Clay | Wilson US Open | 32 | 17 | 47% | |
| Green Clay | Wilson Clay | 31 | 16 | 48% | |
| Red Clay | Wilson US Open | 31 | 17 | 45% | |
| Red Clay | Roland Garros | 28 | 15 | 46% | |
| Hard | US Open | 29 | 15 | 48% | |
| Grass | US Open | 36 | 18 | 50% | |
| Grass | Wimbledon | 35 | 17 | 51% |
Heavy Underspin
Velocity Out - Distance
| Court: | Ball: |
Velocity Before Bounce (MPH): |
Velocity After Bounce (MPH): |
Velocity Reduction |
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| Green Clay | Wilson US Open | 23 | 13 | 43% | |
| Green Clay | Wilson Clay | 33 | 19 | 42% | |
| Red Clay | Wilson US Open | 31 | 18 | 42% | |
| Red Clay | Roland Garros | 30 | 17 | 43% | |
| Hard | US Open | 28 | 16 | 43% | |
| Grass | US Open | 33 | 16 | 52% | |
| Grass | Wimbledon | 33 | 16 | 52% |
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Last modified: Sun Apr 25 17:36:17 PST 1999
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