Quote Originally Posted by Ganpati's Goonerz--AFC's Aboriginal Fertility Cult View Post
I thought I got how a football moved depdening on which part of the foot you hit it with.

But I don't get why a ball starts off being an inswinger, changes its mind mid-flightand ends up an outswinger.

And this is happening far more regularly nowadays.
Have you never played football?

When you hit the ball sweetly the ball doesn't have a high spin rate.
Spin on the ball give it a predictable ball flight.

When it doesn't spin (or has a low spin rate) the ball flight is erratic - I assume wind resistance plays a part.