Regarding service, forehand and backhand, Marin Cilic can actually serve as a certain standard prototype for the TENNIS 3.0 style of stroke production, where body energy dominates the stroke dynamics as well as racket position in space and where elbow reaches longest possible distance from the center of gravity during and after the impact.
Roger's service has more pronounced pronation and he spends a higher percentage of the service energy on the dominant (=right) side of the body than Andy. Over his entire career on the tour (data until mid-January 2017), Federer has the 1st service percentage of 62% (Murray 58%, Djokovic 65%, Nadal 69%) on which he won 77% of the points (Murray 75%, Djokovic 73%, Nadal 72%)...
The above numbers tell us that Andy's service margins are mostly (besides aces) quite below the ones of his closest competitors. It's mainly his excellent return and rally game that make him to such a successful player he is. From the technical point of view, as I personally see it, a limited pronation and a rather unclear distinction between the follow through 1 and follow through 2 are the reasons behind Andy's lower service margins. Interestingly enough, Ivan Lendl (1st serve 56%, overall service points won 66%) had similar issues in his career.
From the point of the technique, Karolina has some excellent aspects of the Service 3.0 going most probably back to her early technical development stage in her junior years and also one little weakness leading to a lower margin at decisive (tense) moments like during her recent US.Open finals. Some of the main elements can be seen below..
One of the most misleading tennis instructions is the imperative suggestion to lead the racket after the impact across to the non-dominant leg (left with the right-handed player) in the follow through of the service motion....
TENNIS 3.0 CODE has few respective requirements for each of the strokes of tennis. But there is the one main element of the TENNIS 3.0 CODE, which is common to all dynamic TENNIS 3.0 strokes being hit with the optimal combination of power and control (with the exception of some trouble-shooting and trick strokes), which we want to reveal to the tennis world - the common denominator of all high-quality dynamic TENNIS 3.0 strokes is in the effort to move...
The principles of TENNIS 3.0, meaning the dominance of the body action in the strokes, can be applied practically for everybody at every age and level. Here featured senior player Jörg (65+ / SUI) is a life-long athlete, but late tennis starter. He was still able to learn in his sessions with the MBTA practically perfect serving motion where he generates the power of the ground and dominates the service by the energy from the body, which is being channeled into full upper-limb targeted pronation
