Does anyone have a link or anything to show how much drag occurs if you do not take the racquet up on edge? Or how much additional speed you may obtain if you take it up on edge? Not trying to get into serve mechanics, here, just physics (is it physics?) I would like to be able to show someone the benefits of this. They won't take my word for it. I always wondered about this myself. If drag is the issue here, wide beamed sticks must have more drag and those fancy O3 racquets should have less drag on the serve, right? Theoretically speaking, of course. Don't want to argue about racquet technology or lack thereof. Please excuse my ignorance. I don't usually spend much time thinking about the science of tennis.