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We worked with the( men) players' caddies and obtained all of the driving club information they had from the teeing grounds and then obtained the clubs they hit on approach shots and the yardages they hit them, and we gathered information from marshals on the putting greens about how the ball was reacting. So we not only knew what the men hit the first week from the tee, and their approach shots and the ranges that they were hitting but how the balls were performing on the greens.