I enjoy sports, I guess football, baseball and basketball are my favorites. And they all have something in common. The best teams know how to play defense, they fill in the gaps. On a football team, closing the gaps quickly means that the running back can’t make a big gain. In basketball, filling the gaps means shifting so the other team doesn’t get an easy layup. In baseball, the infield shifts to cover the gaps so that the batter doesn’t get an easy hit.