To get the feel of how the slider should roll off of your index finger, use this grip and practice at half speed and roughly half the distance to the mound.
“It's part of our nature. As much as I love (brother and guitarist Eddie), if you put us in a room with no one else for 15 minutes, we'd be at each other's throats.”
“It is in the thirties that we want friends. In the forties we know they won't save us any more than love did.”