Jai-alai is not too hard to understand when seen live, on a monitor it is difficult to follow because of the speed of the game ( 150 mph +), size of the court ( 180 feet + in length), and low quality of the camera work and equipment. Its fun to attend live, and there are definite factors that lead to certain number combinations being more likely, and some near impossible.
Its something I'd suggest to somebody visiting Florida, if they have never seen it. Admission and great seats costs like $5.