we need 4 points to win a game in lawn tennis
Win the rally.
The goal of tennis is to win 2 6 game sets by two games.
Deuce. Then somebody has to win two points in a row to win the game.
You need to win 4 points to win a game, which would be: love, 15, 30, and 40.
If you win your service game, you "held" your serve. Holding serve requires you to win your service game.
You win that game !
Of course a narwhal would win.
the server has the advantage to win the game after deuce