tennis match

[beginner]

i was watching tennis,but my grandmother changed it,and ther's just too much going on to watch in here.i was wondering,when the ball goes out of bounds and dosent hit the line.is it out?what about when they do hit the line do they score.;)

[LazyAzN]

If the ball clips the line the ball is in.
If it doesn't clip the line, then its out.