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2021 Marucci CAT 9 Connect Review

By Bat Digest | Last Updated November 17, 2022

We hit the 2021 Marucci CAT 9 Connect in both BBCOR and USSSA drop 5, 8, and 10. In short, we love it. We think it’s a fantastic bat with a reasonable end load in both lines. The connection is less stiff when compared to other hybrid bats, but we preferred that. Our hitters especially liked the USSSA Drop 10 and believe it will be one of the best in that space for 2020. The only thing the line is lacking a USA version. Otherwise, there’s nothing we’d change.

Price Check

2021 CAT 9 Connect Video

2021 CAT 9 Connect Video

2021 CAT 9 Connect Models

Our hitters liked the less stiff connection on the 2021 Marucci CAT 9 Connect. Most two-piece hybrid bats with an end load try and make the connection as rigid as possible. The hitters who want a smoother feel, as you’d find in a two-piece composite, really liked the CAT 9 Connects feel. As well, we went head to head on several other bats, and the hitters liked their exit speeds.


General Recomendations

In BBCOR, the CAT 9 Connect is an end-loaded bat. Those looking for a lot of weight will like it. Those who are not, won’t. In USSSA, the CAT 9 Connect swings just a bit heavier than the CAT 9–but both should be considered between balanced, or middle of the road swing weight bats.

Model Recommendations


BBCOR Review

CAT 9 Connect BBCOR Ratings (key)
4 5 4 2 4 4 5 5 4 4
MOI Tech Drb Flx Prof ReSl PlaRa ExVe Relv Dmnd

The 2021 Marucci CAT 9 Connect in BBCOR is a two piece hybrid bat with a semi-flexible connection and a bit of an end load. We think it a great fit for the player who wants a hybrid but doesn't want the end load or stiffer feel of a bat like The Goods. As well, the barrel on the CAT 9 Connect is plenty large and it is one of our favorite BBCOR swings for 2021.
Sizing: 31, 32, 33, 33, 34-inch
Release Date: October 1, 2020
Serial: MCBCC9
Bat Type: Single Piece Alloy
Barrel Size: 2 5/8
See other BBCOR Bats

USSSA Drop 5 Review

CAT 9 Connect USSSA Drop 5 Ratings (key)
4 5 4 2 4 4 5 5 4 4
MOI Tech Drb Flx Prof ReSl PlaRa ExVe Relv Dmnd

The 2021 Marucci CAT 9 Connect in USSSA drop 5 is everything we'd ever want in a hybrid drop 5. It's got a big barrel, balanced swing (for the class), and fantastic performance in an alloy. It is our favorite drop 5. We do like bats like the CF and CAT 9 Composite in a drop 5 better. But, if a player wants an alloy barrel in a hybrid drop 5 USSSA, we think they can't beat the drop 5 Marucci CAT 9 Connect.
Sizing: 30, 31, 32-inch
Release Date: October 1, 2020
Serial: MSBCC95
Bat Type: Single Piece Alloy
Barrel Size: 2 3/4
See other Drop 5 USSSA Bats

USSSA Drop 8 Review

CAT 9 Connect USSSA Drop 8 Ratings (key)
3 5 4 2 4 4 5 5 5 4
MOI Tech Drb Flx Prof ReSl PlaRa ExVe Relv Dmnd

The 2021 Marucci CAT 9 Connect in a drop 8 USSSA might be our favorite USSSA bat of the year. It swings great, has a fantastic balance, and hits the ball as hard (or harder) than any other USSSA drop 8 on the market. The price point and durability compared to the CF make it a really compelling choice. Hitters looking for a durable drop 8 bat with top performance, a good price, and a great two-piece feel should like the CAT 9 Connect a lot.
Sizing: 28, 29, 30, 31, 32-inch
Release Date: October 1, 2020
Serial: MSBCC98
Bat Type: Single Piece Alloy
Barrel Size: 2 3/4
See other Drop 8 USSSA Bats

USSSA Drop 10 Review

CAT 9 Connect USSSA Drop 10 Ratings (key)
2 5 4 2 4 4 4 4 5 4
MOI Tech Drb Flx Prof ReSl PlaRa ExVe Relv Dmnd

Marucci's CAT 9 Connect in a drop 10 USSSA is an absolute fire bat. We love the big barrel, light swing, performance and price. We also love durability compared to some two-piece composites---although we did slightly dent the barrel on the drop 10. Generally, we think the drop 8 is a better choice if you can swing it. We'd rather drop an inch and add those two ounces (like from a 31/21 to a 30/22). But, if you're in the 29/19 or 30/20 world, the CAT 9 Connect might be the best overall value bat on the market.
Sizing: 28, 29, 30, 31-inch
Release Date: October 1, 2020
Serial: MSBCC910
Bat Type: Single Piece Alloy
Barrel Size: 2 3/4
See other Drop 10 USSSA Bats

Comparable Bats

The CAT 9 Connect has serious competition in The Goods and the NOX. As well, Easton makes a Hybrid Fuze, and Slugger makes the Select PWR. All compete well with each other and have very similar exit speeds.

Previous Models

The 2019 Marucci CAT 8 Connect was also an end-loaded two-piece hybrid bat built with the big hitter in mind. For 2021, a drop 10 and 8 to complement the Drop 5 Connect from 2019 are great additions.

The BBCOR version has an upgraded barrel that uses horizontal grooves to help lower the swing weight, improve durability, and expand the sweet spot. In practice, it all means about the same as the CAT 8. But that isn’t a bad thing. And it is good to see Marucci not get complacent and continue to make the bat better–even if it is only marginally.


The 2021 Marucci CAT 9 uses variable wall thickness to extend the length of the usable barrel and lower the swing weight. As well, in the BBCOR version, there are grooves along the length of the barrel that bring down the swing weight.

Unlike the CAT 9, the CAT 9 Connect dampens sting by removing vibrations in the connection piece. The CAT does it in the knob.

Overall Ratings

The overall rating uses seven different weighted metrics to determine our overall score. Half of total rating comes from the player and our exit speed tests (Player Rating: 25%, Performance: 25%).The other categories are Relevance (20%), Demand (10%), Durability (10%), Resell Score (5%), and Tech Specs (5%).

*: When a bat is denoted by a star (*) it is a preliminary rating. Expect it to be updated as we learn more about the bat and gather more data.

(PlaRa) Player Rating: We measure player rating from user reviews. Those users include our own hitters that we test at the lab as well as reviews we find online.

(ExVe) Performance: Performance measures the exit speeds and distances we capture in our hitting lab with HitTrax using these bats.

(Relv) Relevance: We measure the number of sizes and the MOI of the bat. Bats with a wider range of options get a better score.

(Dmnd) Demand: Demand is measured by consumer sentiment and the buzz around the bat.

(Drb) Durability: A bat’s durability is measured by user reviews as well as feedback from manufacturers.

(ReSl) Resell Score: Based on the price the bats go for used. Higher prices mean greater user demand which means, generally, a better bat. A resell value closer to its original price means a higher score.

(Tech) Tech Specs: We rate the bat on its technological advancements from previous years and compared to the industry at large. This is our chance to reward companies who are trying to innovate.
MOI or Mass Moment of Inertia is a measurement of bat swing weight. This quantifies how difficult it is to swing a bat. The industry often refers to this as things like End Load or Balanced but those words have been overused to the point of meaninglessness. We measure the actual swing weights of each bat we test using the industry-standard pendulum period, balance point, and scale weight. You can read more about that here.
The price is the original MSRP price of the bat.
The types of bats are single-piece alloy (SPA), two-piece composite (TPC), single-piece composite (SPC), hybrid (Hyb.), and wood (Wood). Hybrid bats are made of composite handles and alloy barrles.
The estimated date the bat began distribution.

Download our data.