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2021 Marucci CAT 9 Review

Best Bat Digest score 96/100
Top grade A
Score range: 82-96/100 across 7 scored models Top model: 2022 Marucci CAT 9 Pastime BBCOR -3
May 31, 2026
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2021 Marucci CAT 9 Review
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Who should buy the 2021 Marucci CAT 9?

If buying: Consider the 2021 Marucci CAT 9 if this matches your player: Baseball hitters who want a one-piece alloy option across BBCOR, USA, and USSSA in -11 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 full bat view

Best for

  • Baseball hitters who want a one-piece alloy option across BBCOR, USA, and USSSA in -11 to -3.
  • Hitters choosing -11 to -3 drops in BBCOR, USA, and USSSA.
  • Shoppers comparing multiple drops or certifications inside the same model line.

Skip if

  • 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 a good bat?

The 2022 Marucci CAT 9 Pastime (BBCOR) is a single piece alloy bat reviewed by Bat Digest.

What should you know about the 2021 Marucci CAT 9?

  • How good is the 2022 Marucci CAT 9 Pastime in our rankings: It is ranked 3 out of 424 in BBCOR -3 bats.
  • Who is the 2021 Marucci CAT 9 for: Baseball hitters who want a one-piece alloy option across BBCOR, USA, and USSSA in -11 to -3.
  • Construction: Single Piece Alloy
  • Drop options: -11 to -3
  • Price: $200 - $350

What are the 2021 Marucci CAT 9 specs?

  • Year: 2021
  • Brand: Marucci
  • Model Name: CAT 9
  • Drop: -11 to -3
  • Construction: Single Piece Alloy
  • Original Price: $200 - $350

What evidence is this based on?

What we know

  • Available as BBCOR, USA, and USSSA, -11 to -3 drops, 24 to 33 inches sizes, $200 - $350 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, USA, and USSSA; match the exact certification and drop to your league.

  • 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?

The most comparable bat on the market to the CAT 9, we think, is the Warstic Hawk or Slugger's Solo. We also think the Victus Vandal is a reasonable comparison. All are single-piece aluminum bats with a decent sized barrel. The Solo swings lighter and the Vandal will wring your hands more. Some might also consider the Rawlings VELO as a reasonable comparison. We do not disagree. The Solo, Vandal, and VELO all have variable wall thickness to extend the swing spot of the barrel.
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 FAQ

Is the 2021 Marucci CAT 9 a good bat?
It makes the most sense for this player fit: Baseball hitters who want a one-piece alloy option across BBCOR, USA, and USSSA in -11 to -3. The score strip and model table are the quickest way to compare the listed variants.
Which 2021 Marucci CAT 9 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?
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: 82-96/100 across 7 scored models Top model: 2022 Marucci CAT 9 Pastime BBCOR -3
Model League Drop Overall score Power Control Quality Value Price Check price
2021 Marucci CAT 9 USSSA full bat view CAT 9 MJBBC9GS USSSA -10 82/100 B- B A+ B B+ $220
2021 Marucci CAT 9 USSSA full bat view CAT 9 MSBC95 USSSA -5 90/100 A- A A+ B B+ $280
2021 Marucci CAT 9 USSSA full bat view CAT 9 MSBC98 USSSA -8 91/100 A- A A+ B A $280
2021 Marucci CAT 9 USSSA full bat view CAT 9 MSBC910 USSSA -10 91/100 A- A A+ B A $280
2021 Marucci CAT 9 BBCOR full bat view CAT 9 MCBC9 BBCOR -3 88/100 B+ A A B B+ $350
2022 Marucci CAT 9 Pastime BBCOR full bat view CAT 9 Pastime MCBC9A BBCOR -3 96/100 A A A+ A A $350
2021 Marucci Cat Connect USA full bat view Cat Connect MSBCC11USA USA -11 86/100 B B+ A+ B A $200

What is the quick review?

The long-awaited Marucci CAT 9 was made widely available on 8.31.2020. (Check here to buy it). For 2021, expect the same great barrel with a new alloy and the same AV2 knob found in the CAT 8. The 2021 Marucci CAT 9 comes in BBCOR, USSSA and USA. It's big barrel and light swing in USSSA will attract a lot of hitters, again. The not too end-loaded BBCOR performs as well as any BBCOR bat on the market, has a loud ping and a great look.

What models and sizes are available?

Our hitters like the loud sound, great feel for a single piece, and what feels like a long sweet spot on the 2021 Marucci CAT 9. The bat looks great and doesn't feel much different (if at all) when compared to the 2020 CAT 8. That isn't a bad thing, but it does feel a bit like the same old CAT with a new look and a differently named alloy.

How is it built?

Marucci has used the same general principles in their CAT line of bats ever since the now illegal Cat 5. That is, they:
  • use a high performing barrel that uses variable wall thickness to create a longer sweet spot.
  • Implant a silicone piece inside the knob of the bat to help dampen sting on mishits (they call this the AV2).
  • Do not use any rings inside the barrel.
  • Focus the bats swing weight towards the knob for a lighter feeling bat.
  • Use a single piece of aluminum to construct the entire bat.

How does it compare?

As we stated above, the 2021 Marucci CAT 9 comes with an upgraded allow when compared to the CAT 8. They changed some things to make it more durable and a bit thinner. Marucci still uses multivariable wall thickness to extend the length of the sweet spot and bring down swing weight. As well, in the BBCOR bats, they added a groove along the length of the barrel to bring down the swing weight even more.
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