I umpire in a community league. We recently had a healthy discussion concerning bats that rattle when shaken. Specifically a few of the guys have Combats that are a few years old and have a plastic ring inside the bat that breaks up after some use and causes a slight rattle. Does this rattling constitute an unsafe or illegal bat? Some of the guys in our league have played in a number of tournaments and state that they have never seen a bat taken out of play due to a rattle. I would appreciate getting feedback on this. Thanks.