Scientists are testing a new prototype tennis racquet that is stuffed with electronic sensors to track a player's every slice, spin and smash. <br />Tennis stars Rafael Nadal and Jo-Wilfried Tsonga were among those who put the racquet through its paces.<br />As the two giants of the court traded shots, their prototype racquets communicated data wirelessly to two display screens and mobile devices.<br />...<br />http://www.euronews.net/
