Your partner is ready to return serve. You are correctly in the hot seat (on the service line next to the T). Are your hips facing the server or are they facing the net man? If they are facing the net man, you understand a very important element in doubles - control of time. Hips and eyes directed at the net man prepare you for the worst return from your partner (at the net man). If that shot occurs, you will have time to defend that return, and if he hits a good return (crosscourt or lob), you will have time to attack either. Time is short on the doubles court, and the person who understands it best has a huge advantage over others.