2021 Marucci CAT9 Alloy BBCOR Certified Bat (-3) 29 oz 31" (Used)

This is a 2021 Marucci CAT9 Alloy BBCOR-certified baseball bat, built with a 2 5/8" alloy barrel and a -3 drop weight-length ratio. The CAT9 Alloy offers a balanced feel through the swing, combining durability with a responsive barrel that meets BBCOR standards for high school and college play. This bat is used but remains a solid option for competitive play where certification and consistent performance matter. With a length of 31" and a weight of 29 ounces, this bat suits players who prefer a slightly longer reach with a manageable weight for quicker bat speed and control. The BBCOR certification means it’s legal for high school and college leagues, ideal for players transitioning into or competing at those levels. The alloy construction helps deliver a solid pop without compromising swing weight, making it a practical choice for players looking to balance power and bat speed.

The Marucci CAT 9 features a single piece of aluminum with multivariable wall thickness, extending the sweet spot and reducing swing weight. The CAT9 features a Ring-free barrel which allows for more flex within the barrel and minimizes dead spots through the bat. This model includes new technologies like the AV2 knob to dampen sting on mishits and is available in BBCOR, USSSA, and USA versions.

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My son really likes the CAT9. He likes the weight distribution and how it feels when he catches it clean with his “A” swing. He also feels like there’s a margin for error on his “B/C” swings. It’s his first BBCOR, which has helped make the transition to the big field manageable.

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@Tjh19, Parent Review