Cricket is unusual among major sports (along with golf, Australian rules football and baseball) in that there is no official rule for a fixed-shape ground for professional games. On most grounds, a rope demarcates the perimeter of the field and is known as the boundary.
Cricket diverges from other major sports (such as golf, Australian rules football, and baseball) in that there is no set rule governing the ground's dimensions for professional contests. Usually, a rope delineates the field's edges on most grounds.