Footwork: Quick like an antelope or
flat footed like an elephant?
If the latter, hit crosscourt to use the biggest part of the court. This creates openings to hit the open space and away from opponents. Singles players, look to finish points faster by getting to net once you have the player off balance. For doubles, expose the player who is slower (usually there will be one) and make them move with good crosscourt angles or shorter target shots.
Serves: Weak or strong?
If weak serve, hit the aggressive shot and go down the line. For doubles, make sure your partner is aware of your strategy, so they're prepared to cover the middle and put the ball away. Against a good server, keep returns low and away from the net player.
Coin Toss: Win or lose?
: If you win the coin toss and the opposing has a weaker serve, let them start the match. If playing outdoors and you lose the coin toss and opponent wants to serve, choose the side where the sun is at your back and/or wind is in your face. In other words, make opposing serve into the sun or with the wind.
Support and Motivate!
Above all else, whether you're playing singles or doubles, support and motivate yourself and/or your partner. This is the cardinal rule of tennis and should never be broken!