Trade off for longer bat

[YOCOACH]

You're confusing true weight with swing weight. I don't know the physics behind it but the way a bat is balanced and where/how the weight is distributed along the barrel allows the heavier RT to swing as a -9 bat even though it has a dead weight of -7 or so. However, this puts that extra mass behind the ball at contact which is one of the reasons they are so hot.

 

[5citysluggers]

Look up MOI on bats. Pick up a bat swing it backwards. Same weight but swings lighter. Don't know if that's a good comparison lol but someone once told that to me and its stuck with me. I got into a big argument with a batting coach at one of our practices who came just to scout more of our girls to come to him. He didn't like the -9 or -10 and said -12 is the way to go, then preaching why corked bats hit better in MLB. Long story short he never came back no one liked what he was trying to teach anyway. But everyones swing is different so science can only go so far. Swing Weight: Why moment-of-inertia matters more than weight