I've always been curious why some racquets are 27.25 inches long. 27 and 27.5 I can understand. But a measly .25 inches? I mean its not even a full centimeter and adds less than 1% to overall length. Can anyone really tell the difference between 27 and 27.25 inches? Is the mfg. targeting a specific swingweight, are they just looking for bragging rights, i.e. my player's frame is longer than yours or is it the oft discussed manufacturing variance? All theories/explanations welcome.