Mason McGwire
SP · High-A · 22.0y · #4455 of 7,922 we rate
- The player
- LONG SHOT
- The market
- Untested
- What to do
- Watch
34 out of 100 — our all-round score from the season line, his tools against the level, and how young he is for it.
3 cards of his are listed and nothing comparable has verifiably sold, so we will not tell you whether the asks are fair.
We can't see what this costs all in, so there's nothing to judge yet.
Our take
Long-shot prospect, untested market.
Mason McGwire scores 34 out of 100 (#4455 of the 7,922 we score), and the case rests on one thing: young for the level — +1.0y vs his level at High-A — younger than 74% of the players there.
His core Bowman card has been selling at $9–16 off 1 confirmed sale.
Cards of his are listed and none of them can be priced against a confirmed sale, so any judgment about value today would be a guess dressed as a number.
The thing most likely to be wrong here: no professional sample — we hold no season line for him, so every player-side reading on this page is missing its main input.
The signal
Young for the level
+1.0y vs his level at High-A — younger than 74% of the players there.
The case is fading
Baseball momentum 0/100 — the on-field case is fading. Read from his baseball alone — never from what his cards did.
What the hobby pays up for
SP sells at a discount at equal production.
Why now
No catalyst right now — no promotion, no logged step change, and no measurable move in his card prices. This is a valuation-driven watch rather than a timing one.
What could go wrong
No professional sample
We hold no season line for him, so every player-side reading on this page is missing its main input.
Nothing has sold
No confirmed sale of any card of his in 90 days, so nothing on this page can tell you what a fair price is.
Benchmark not checklist-verified
His core card was identified from how raw base 1st bowman chrome auto sellers describe it, not from a checklist. The identity is likely, not established.
What the hobby pays for him
Benchmark card: 2024 Bowman Chrome 1st Auto CPA-MM — raw, base, unnumbered.
Described by 2 independent sellers — observed, not checklist-verified.
$9.35–15.59midpoint $12.47
Evidence limited· 1 salemost recent 2026-08-22 · 2 listed now
- 7 days
- not enough sales
- 30 days
- not enough sales
- 90 days
- not enough sales
This is his benchmark, not the value of any particular card in front of you — a /250 is a different market.
The card that matters
A card-quality answer, not a price one. It does not change when a seller changes their mind.
2024 Bowman Chrome 1st Auto CPA-MM
Raw base 1st Bowman Chrome Auto
The canonical prospect vehicle — every player who has one is compared on it. Identified from 2 independent sellers describing it — likely, not established.
A card is never the one to own because it is numbered. Scarcity is a modifier on a vehicle, not a vehicle — a /25 of a card nobody collects is a rarer version of nothing.
Best value right now
Where the money would go today, which is frequently a lesser card than the one above — or nowhere.
Insufficient market evidence
No live ask and no confirmed sale on any version of his cards, so there is nothing here to call good or bad value.
What would make this a buy
- On his best-priced card: player not there yet.
- A promotion, or a stretch that lifts the season line, would move the player side of this.
What is for sale right now
3 cards of his are listed · 0 of the 3 we can judge clear the investment bar. These are the 3 worth looking at, best first.
2024 Bowman Chrome Mason McGwire #CPA-MM Auto Orange Refractor /25 1st Prospect
/25 · raw · condition not stated · takes offers · listed 11d
Player not there yet · 2 other things in the way
—
modeled $16.83–65.47
PASS
2024 Bowman Chrome Mason McGwire Auto 1st Prospect #CPA-MM Cubs F795
base · raw · condition not stated · takes offers · listed 12d
Player not there yet · 2 other things in the way
Data stale — Last confirmed live 61h ago — beyond the 48h bar. Needs a re-sight before the analysis is current.
—
sold $12.47
PASS
Topps 2024 1st Bowman Chrome Mason McGwire Prospect Autographs Auto #CPA-MM Cubs
base · raw · condition not stated · takes offers · listed 14d
Player not there yet · 3 other things in the way
Data stale — Last confirmed live 61h ago — beyond the 48h bar. Needs a re-sight before the analysis is current.
—
sold $12.47
PASS
What the same money buys today
Nothing of his is worth buying right now. These live cards from other players are the ones we rate as a buy or a watch at the same budget — not a view on Mason McGwire, just what the money can do today.
- Pedro Ramírezbase$35.94Watch14% under fair value
- Cole CarriggRefractor$14.98Watch42% under fair value
Compared within under $40.00, your stated ceiling. Ranked on the price-blind investment score among the 60 live listings we had scored — a read on what we scanned, not on the whole market.
Your research
Private to you. What you are waiting for, and why — so next time you open this page you do not have to remember.
Your target
The price you are waiting for, and why. Private to you.
Your notes
Sign in to keep your research — private notes on what you are watching and why.
The evidence
Everything the reading above is built on. Open whichever part you want to check.
What he is good atno percentiles against his level yet
What he is good at
On the 20–80 scale every scouting report uses: 50 is average, and every 10 points is one standard deviation. Measured against 492 hitters at High-A — measured against real players at the same level right now — not a scout's projection of what he becomes.
Contact
Can he hit it?
—
not measured for him yet
—
strikeout rate, inverted — lower means more bat-to-ball
Power
Can he hit it hard?
—
not measured for him yet
—
isolated power — slugging minus batting average, so hits that go for extra bases
Plate discipline
Does he pick his pitch?
—
not measured for him yet
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walk rate — higher means he makes pitchers come to him
Speed
Can he run?
—
not measured for him yet
—
stolen bases per full season of plate appearances
Production
Is it showing up in the box score?
—
not measured for him yet
—
on-base plus slugging — the result, which carries the luck as well as the skill
Age for the level
Is he doing it young?
56
above average · better than 74% at his level · context, not a skill
+1.0y vs his level
years younger than the median player at his level — positive is young for the level
Will he get there?
Long shot 3.9 / 10
- old for High-A
This is an ordering score, not a percentage. We hold no outcome data and have run no backtest, so “a 93% chance of reaching the majors” would be a number we made up and you then spent money on. Built on 86% of what it wants to know — missing production.
How he is playingno season line on file
We hold no season stat line for him. That happens when he has not played enough this year, or when the roster refresh has not reached his level.
What his cards have sold forno completed sales logged yet
Real completed sales only — nothing here is an estimate. These come from the scan: it asks eBay about listings it has already seen, and one that ends at a fixed price is recorded as a sale. That builds up over days. You can add one by hand below if you happen to know it, but you are not meant to be the price database.
No sales logged yet. We need at least two to draw a line, and about five spread over a month before the numbers mean much. Add sales you find using the button below.
The whole live market3 listed · 3 eBay-verified
- Listings
- 3
- Lowest seen
- —
- Median ask
- —
- Cheapest 1st auto
- —
- Cheapest numbered 1st auto
- —
3 eBay-verified
Latest eBay verification: 13 hours ago.
What this page is missing3 things we do not hold for him
What this page is missing
Everything above is built from what we actually hold. These are the gaps, so you know which parts of the argument are thin rather than wondering why a panel is quiet.
- We do not have a season stat line — he may not have played enough yet.
- We do not have percentiles against his level — the roster refresh computes these.
- We do not have a sold price in 90 days — add one and the whole price side fills in.
Worth reading for this player
- What a modeled fair value means — at least one value on this page was modeled rather than taken from a sale
- Parallel scarcity calculator — numbered parallels of his cards are in play, and print run drives the premium
- Best Offer calculator — at least one of his live listings accepts offers
- Certified vs aftermarket autographs — signed cards of his are listed, and the two kinds are not worth the same
- Parallels and print runs — his market includes numbered parallels, which are priced off the print run