Palmball

This takes some of the velocity off the pitch, intending to make the batter swing before the ball reaches the plate.

[1] Notable pitchers who have been known to throw the palmball include Ray Sadecki, Steve Farr, Robinson Tejeda, Ed Whitson Edwar Ramírez, Dave Giusti, Bob Stanley, Orlando Hernández, Mark Williamson, John Holdzkom, Randy Martz, reliever Tony Fiore, Bryn Smith, and 1990s reliever Joe Boever.

Former Philadelphia Phillies and Toronto Blue Jays ace Roy Halladay was known to have thrown a palmball early in his career, though he rarely used it later on.

Second on the All-Time saves list, Trevor Hoffman, made his palmball changeup his "out" pitch.

In 1968, Red Sox starter Ray Culp turned his career around by developing a palmball.