1) Baseball pitch 2) Deceptive pitch 3) Tricky pitch 4) Unexpected pitch 
ChangeUp is a UK government backed project to improve the support and assistance available for what is called the `voluntary and community sector` (charities, non-profits, community groups). The initiative includes improving accounting procedures, information technology capability, governance and many other areas. ... A changeup is a type of pitch in baseball. The changeup is the staple off-speed pitch, usually thrown to look like a fastball but arriving much slower to the plate. Its reduced speed coupled with its deceptive delivery is meant to confuse the batter`s timing. It is meant to be thrown the same as a fastball, but farther back in the hand, which mak....
A baseball pitch that is meant to resemble a fastball but is much slower. The goal of changeups is to confuse the batter and mess with his timing.
A pitch, which seems to be a fastball
A slow pitch that is meant to look much faster. There are different variants of changeups.