This summer, you don't have to break the bank to enjoy professional sports competition at its best. We've dispatched reporters far and wide to watch action-filled competitions that don't cost the equivalent of a monthly mortgage payment. (Yes, there is life beyond the Yankees and the Red Sox.) Our special guide will plunk you into the bleachers (or beaches) of contests ranging from lacrosse to mountain biking to surfing. And we'll explain how you, too, can score inexpensive tickets to an exciting game, match, race, or tournament near you.