In addition to rediscovering lost scores, Mr Savall set about completely reinventing a playingtechnique that would help him draw the best from the delicate instrument.
Meanwhile, Guskiewicz, the North Carolina expert, encourages children to continue playing contact sports to help them develop proper technique for later years.
No drastic changes in approach are planned if Nadal and Djokovic meet in the final, but the 25-year-old has been reviewing old matches between the pair on tape, working on technique and points to improve and focusing on playing better in the key moments.
Using the Sokka unit basically involves kicking a ball against a flat playing surface containing a number of electronic sensors that monitor accuracy and technique.