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2021 Marucci CAT 9 Connect Review

Best Bat Digest score 91/100
Top grade A-
Score range: 84-91/100 across 4 scored models Top model: 2021 Marucci CAT 9 Connect USSSA -8
May 31, 2026
Expert Tested
2021 Marucci CAT 9 Connect Review
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Who should buy the 2021 Marucci CAT 9 Connect?

If buying: Consider the 2021 Marucci CAT 9 Connect if this matches your player: Baseball hitters who want a one-piece alloy option across BBCOR and USSSA in -10 to -3. Choose the exact certification and drop first, then use the score and model table on this page to compare the available versions.

2021 Marucci CAT 9 Connect full bat view

Best for

  • Baseball hitters who want a one-piece alloy option across BBCOR and USSSA in -10 to -3.
  • Hitters choosing -10 to -3 drops in BBCOR and USSSA.
  • Shoppers comparing multiple drops or certifications inside the same model line.

Skip if

  • Durability concerns are mentioned in the review.
  • You do not want to sort through certification-specific versions before buying.
  • You want a new warranty-backed bat instead of shopping an older model.

Confidence: Published Review This uses Bat Digest catalog data, ratings data, and existing review notes; current availability, warranty coverage, and used-market condition may vary.

Is the 2021 Marucci CAT 9 Connect a good bat?

The 2021 Marucci CAT 9 Connect (BBCOR) is a single piece alloy bat reviewed by Bat Digest.

What should you know about the 2021 Marucci CAT 9 Connect?

  • How good is the 2021 Marucci CAT 9 Connect in our rankings: It is ranked 48 out of 424 in BBCOR -3 bats.
  • Who is the 2021 Marucci CAT 9 Connect for: Baseball hitters who want a one-piece alloy option across BBCOR and USSSA in -10 to -3.
  • Construction: Single Piece Alloy
  • Drop options: -10 to -3
  • Price: $300 - $400

What are the 2021 Marucci CAT 9 Connect specs?

  • Year: 2021
  • Brand: Marucci
  • Model Name: CAT 9 Connect
  • Drop: -10 to -3
  • Construction: Single Piece Alloy
  • Original Price: $300 - $400

What evidence is this based on?

What we know

  • Available as BBCOR and USSSA, -10 to -3 drops, 28 to 33 inches sizes, $300 - $400 pricing.
  • Construction: Single Piece Alloy.
  • The score module is generated from Bat Digest ratings data for the associated model set.

What we have not tested yet

  • Every used-market copy or later production batch.
  • Current seller pricing, warranty coverage, and availability.
  • Whether league rules or stamp requirements have changed since the original review period.
  • Variant, drop, size, price, and certification facts come from current Bat Digest catalog data.
  • Buyer-fit language is based on the existing Bat Digest review notes and watchouts in this file.
  • Scores and score ranges come from Bat Digest ratings data rather than static article copy.

What about durability and legality?

Legality: Multi-certification The line spans BBCOR and USSSA; match the exact certification and drop to your league.

  • Durability concerns are mentioned in the review.
  • For older alloy bats, inspect dents, waves, rattles, and end-cap condition before buying used.
  • Used-bat condition can matter more than the original review grade.

What bats are comparable to the 2021 Marucci CAT 9 Connect?

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.
2021 Victus Vandal

2021 Victus Vandal

Overall: A (93/100) Rank #16/126

Closest same-lane comp: another BBCOR and USSSA one-piece alloy to check for feel, value, and model fit.

2020 Victus Vandal

2020 Victus Vandal

Overall: A (93/100) Rank #16/126

Closest same-lane comp: another BBCOR and USSSA one-piece alloy to check for feel, value, and model fit.

2022 Victus Vandal 2.0

2022 Victus Vandal 2.0

Overall: B+ (89/100) Rank #52/282

Closest same-lane comp: another BBCOR and USSSA one-piece alloy to check for feel, value, and model fit.

2021 Marucci CAT 9 Connect FAQ

Is the 2021 Marucci CAT 9 Connect a good bat?
It makes the most sense for this player fit: Baseball hitters who want a one-piece alloy option across BBCOR and USSSA in -10 to -3. The score strip and model table are the quickest way to compare the listed variants.
Which 2021 Marucci CAT 9 Connect model should I buy?
Start with the certification and drop your player actually needs. Do not use the grade from one certification as a guarantee for a different version.
What bats compare to the 2021 Marucci CAT 9 Connect?
Start with 2021 Victus Vandal, 2020 Victus Vandal, 2022 Victus Vandal 2.0; those are the closest useful cross-shops in this review set.

Video review

How does it rate?

Overall score is Bat Digest's 100-point rating. Prices and availability can move.

Score range: 84-91/100 across 4 scored models Top model: 2021 Marucci CAT 9 Connect USSSA -8
Model League Drop Overall score Power Control Quality Value Price Check price
2021 Marucci CAT 9 Connect USSSA full bat view CAT 9 Connect MSBCC910 USSSA -10 84/100 B B+ A A B+ $300
2021 Marucci CAT 9 Connect USSSA full bat view CAT 9 Connect MSBCC98 USSSA -8 91/100 A- A A+ A B+ $300
2021 Marucci CAT 9 Connect USSSA full bat view CAT 9 Connect MSBCC95 USSSA -5 90/100 A- A A+ A B+ $300
2021 Marucci CAT 9 Connect BBCOR full bat view CAT 9 Connect MCBCC9 BBCOR -3 91/100 A- A A+ A B $400

What is the quick review?

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.

What models and sizes are available?

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.

How is it built?

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.

How does it compare?

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.
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