A racket of racquets

Thwock. With the opening of the Rogers Cup tennis championship tomorrow, there will be a racket of racquets at York University. The implement used by tennis players got its name from an Arabic word, rahet (the palm of the hand), the ball originally being batted around with the hand. No doubt having one's hands bruised to a pulp quickly lost its charm, so the stringed bat was invented. The other racket, designating a din or uproar, or also a scam, is, alas, of undetermined origin.