How can you lose a point in tennis?

You can lose a point in tennis for various things. Here are a few ways:

• You hit the ball into the net
• You hit the ball out
• You fail to return the ball over the net
• You fail to get your serve in on your first or second serve
• Your opponent hits a winner
• If you yell at your opponent using nasty phrases or Words (resulting in a point penalty deduction)
• If you yell at any of the line judges or ball boys (resulting in a point penalty deduction)