Initial movement when returning a serve on the pro tour
We watch the top players return and focused on their ability to return the ball despite a very short reaction time. How short? We measured two times:
- The time from the point of impact of the Nadal serve to the point of impact in the service area. Result: 0.420 sec.
- The time from the point of impact of the ball to the point of impact of the return player Dimitrov. Result: 0.480 sec
Of course, Nadal is not the fastest server on the tour and we measured the second serve. Dimitrov also returns well behind the baseline defensively. There are much more extreem reaction requirements for faster servers and more offensive positions for return players. But a combined 0.9 seconds from racquet to racquet definitely illustrates the difficulty of returning a serve.
The initial movement
The faster world-class athletes gain information about the ball flight (direction, height, speed, spin ) and the expected point of impact (ball impact) and apply this information more efficiently, the earlier the initial movement takes place, such as the opening of the hips (knee rotation) and/or the rotation in the shoulder girdle (turning the shoulder up). Dimitrov stands well behind the baseline (2.80 m) in a wide platform stance (0.94 m stance).
In this case, the first recognizable reaction (excluding the eyes, which we cannot measure in this case) is the opening of the left hip and the lifting of the racquet on the left side of the body (see 1 Initial Movement) about halfway after the ball crosses the net and hits the service area (see 1 Ball).