HOPS is a term used to describe the ability of an infielder to quickly move from one base to another. It is an important skill for infielders, as they must be able to react quickly and accurately to balls hit in their direction. HOPS is also used to refer to the ability of an infielder to field ground balls and make accurate throws to first base. Infielders must have good HOPS in order to successfully complete the challenges they face on the field.