which fingers on a pitcher's throwing hand controls a curve ball and a slider
Middle Finger
When a fast ball and curve ball are mixed together it is called a slider.
Fastball, slider, curve ball, change up. Other pitches include the splitter (split finger fastball) and knuckleball.
A slider is thrown like a curve ball just much faster.
Fastball in the low 90s .... a great slider and a slow curve.
Fastball, curve, slider
How do i upload pictures from my blackberry curve??
To the batter the slider properly thrown has the batter thinking he is facing a fastball. This among other things fools the batter and he is not expecting the ball to waver in its flight to home plate. I filled in part of the discussion area to explore this pitch in more depth.
Fastball, curve, slider, and now a change up
Curve ball, Change up, fast ball, slider, splitter.
A fast ball is when the pitchers throws the ball straight at the strike zone, it doesn't curve (curve ball) or lower (slider), it goes straight ahead.
A slider is similar to a curve ball in the fact that it breaks from left to right or right to left depending on if your a righty or lefty, but the ball doesn't break downward like a curveball does.