We like to change speeds and get the ball inside.

And there are some stretches we won't be able to change speed at all.

"A lot of guys throw hard, but not many know how to change speeds."

I've got a good breaking ball and I can change speeds.

As light travels from one medium to another, it changes speed.

These sample components will change levels and speed based on their size/mass.

All you have to do is keep the ball down and change speeds.

The movement, the velocity, the location, his ability to change speeds.

But you also have to change speeds, and that's very hard to do when your muscles start complaining.

He changed speeds well and had command of four pitches yesterday.