Cubs

 You have two sides, one out in the field and one in.  Each player that’s on the side that’s in, goes out, and when he’s out, he comes in and the next player goes in until he’s out.  When three players are out, the side that’s out comes in and the side that’s been in goes out and tries to get those coming in out.  Sometimes you get players still in and not out.  When both sides have been in and out six times, including the not outs, that’s the end of a Little League game!