SlabDigest brief, Oct 30, 2026

ARCHIVE · This is the SlabDigest brief from October 30, 2026. Prices and boards are as published that morning. See today's report · All briefs

Kon Knueppel's Topps rookie card drops 18% in a week

Kon Knueppel, the Charlotte Hornets forward, has a 2025-26 Topps #204 rookie card with a 7-day median of $37 in PSA 10, down 18% from $45 over the prior three weeks, across 13 clean sales.

Why it's the story

It ranks #2 by size among the 11 cards that cleared the volume bar this week. Brock Purdy's 2022 Prizm (+29%) led recent reports and is still on the Rising board.

The typical tracked NBA card moved -1.0% over the same stretch, so this one outran its market by 17 points.

The card is also at its lowest 7-day median in at least 30 days.

Behind the move

There's no on-field trigger in our notes for Knueppel this week, so the move may reflect something outside the box score, or a thin week of sales. Watch whether it holds.

ROY runner-up; rookie-record 273 threes.

Knueppel's 2025-26 Topps Chrome rookie card moved -13% over the same span, so the move is showing up across his cards.

Darkhorse

The stats moved. The price hasn't.

TRACK RECORD: STARTS AT LAUNCH

Players whose on-field production has jumped while their card's price has stayed flat or slipped. Each pick shows both sides of the gap, so you can judge it yourself.

Cade Cunningham Detroit Pistons guard · 2021-22 Panini Prizm #282 · PSA 10

DAY 3 ON LIST GAP8.2

Cunningham's recent production ranks in the top 4% of guards, but his 2021-22 Prizm rookie card has slipped 14.3% over 14 days, while the typical tracked NBA card is down 2.9%.

The stats · 22.6 pts/g, last 5

DET @ NY (L): 19 pts, 9 reb, 8 ast in 36 min. 22.6 points, 5.6 rebounds and 7.8 assists a game over his last 5 games.

The price

30-day median$95 14-day change-14.3% Typical NBA card-2.9% Sales, 30 days7 30-day range$91–$120

The 30-day median sits near the bottom of its 30-day range.

Stats in the 96th percentile of guards; price change in the 14th percentile of tracked cards. The difference, scaled to 10, is 8.2. Card page →

LeBron James Philadelphia 76ers forward · 2003-04 Topps Chrome #111 · PSA 10

NEW TODAY GAP6.6

James's recent production ranks in the top 13% of forwards, but his 2003-04 Topps Chrome rookie card has slipped 7.4% over 14 days, while the typical tracked NBA card is down 2.9%.

The stats · 15.5 pts/g, last 4

PHI @ IND (W): 13 pts, 5 reb, 10 ast in 33 min. 15.5 points, 6.5 rebounds and 6.8 assists a game over his last 4 games.

The price

30-day median$13,169 14-day change-7.4% Typical NBA card-2.9% Sales, 30 days7 30-day range$11,295–$14,100

The 30-day median sits near the top of its 30-day range.

Stats in the 87th percentile of forwards; price change in the 21st percentile of tracked cards. The difference, scaled to 10, is 6.6. Card page →

Ja'Marr Chase Cincinnati Bengals wide receiver · 2021 Panini Prizm #337 · PSA 10

DAY 6 ON LIST GAP6.5

Chase's recent production ranks in the top 6% of wide receivers, but his 2021 Prizm rookie card has slipped 6.5% over 14 days, while the typical tracked NFL card is up 13.4%.

The stats · 18.4 PPR/g, last 2

Week 7 vs BAL (W 35-13): 5 rec, 62 yds, 1 TD on 7 targets. 18.4 PPR points a game over his last 2, against 16.2 for the season.

The price

30-day median$62 14-day change-6.5% Typical NFL card+13.4% Sales, 30 days4 30-day range$50–$66

The 30-day median sits near the top of its 30-day range.

Stats in the 94th percentile of wide receivers; price change in the 29th percentile of tracked cards. The difference, scaled to 10, is 6.5. Card page →

How picks are made: recent performance against the player's position group (and award odds), set against a 14-day price change of +2% or less, with 3+ clean sales in 30 days. A card leaves the list when its price catches up (more than +2% over 14 days) or it makes the Rising board. Every pick is logged and scored at 14 and 28 days, hits and misses. A signal, not a recommendation.

SlabDigest

Kon Knueppel's Topps rookie card drops 18% in a week

Box Score → Bag

Rising

Falling

Darkhorse

Cooling

Kon Knueppel's Topps rookie card drops 18% in a week

Box Score → Bag

Rising

Falling

Darkhorse

Cooling

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