I heard this phrase about 10 times yesterday during a private from my pro. The context was hitting cross court returns from the deuce side. I guess I should have clarified what exactly was meant by this and since he used the phrase so many times, obviously I'm not protecting the ball well. Anyone heard this phrase before or know what it means? My guess is that he was trying to get me to increase my hitting window by keeping my racquet on line longer as I swing up to contact. I have another session this week and will ask for clarification.