Bowling is a sport in which players attempt to score points by rolling a bowling ball along a flat surface called the lane into objects called pins. There are many forms of bowling, with the earliest dating back to ancient Egypt, while other instances where bowling was first seen can be traced to ancient Finland and Yemen, and much later in 300 A.D. in Germany. Many bowlers in this new era have begun to adopt the 2 handed technique in order to maximize pin action. Pro bowlers Jeff Leiber and John Hopkins have revolutionized this new style sighting a noticable increase in ball speed and acuracy. PBA rules state as long as 2 fingers are in the holes, a second hand is allowed. Traditional one handed style is still used by most of the PBA field.