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TOUR TEMPO® study material
The link gives you more detailed material with a study by Yale university done on the verification of Tour Tempo®
In a recent study from 2009 by Robert Grober of Yale University (see link below) putting by top players and the 2-to-1 ratio has been studied to provide rational why these great players have developed this way of putting
Would you like more background information on the CD Tracks? Follow the link