The CAT 9 is a tiny bit heavier than the average BBCOR but so little that it's hard to tell. By our measurements, this is a lighter swinging bat than the 2018 CAT 8. The Marucci CAT 9 BBCOR is an ultra-popular bat with great barrel size, grip, feel, and performance. It's a top of the line and durable bat that likely deserves all the praise it gets. That said, it is a single-piece alloy and you can find those kinds of bats (without the fancy knob) for a lot less than this. We also love the half sizes added this year.