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Wildcard → Lag Board → Mario Lemieux

Mario Lemieux vs Wayne Gretzky

1985-86 O-Pee-Chee #9 against 1979-80 O-Pee-Chee #18 — measured, not predicted.

Building a baseline Same era Hockey

Measuring Mario Lemieux against Wayne Gretzky — 7 of 8 observations needed before a baseline means anything.

Ratio now
23.8%
Baseline
not established yet
Vs baseline
—
Observations
7
Wayne Gretzky, 30d
+1.3%
Mario Lemieux, 30d
-0.9%
☆ Watch Mario Lemieux's card

Saves Mario Lemieux's 1985-86 O-Pee-Chee #9 to your watchlist, where the daily scan flags listings priced under that card's own comparable sales. That is a different question from this board: the watchlist will not tell you when this ratio moves, and nothing here alerts on the gap.

held out of the baseline10%20%30%40%28 Aug — 32.2% peer $227 / anchor $70730 Aug — 32.2% peer $227 / anchor $7071 Sep — 31.1% peer $214 / anchor $6883 Sep — 30.7% peer $214 / anchor $6974 Sep — 31.7% peer $221 / anchor $6975 Sep — 31.7% peer $221 / anchor $6976 Sep — 30.2% peer $221 / anchor $7327 Sep — 31.1% peer $227 / anchor $7328 Sep — 31.1% peer $227 / anchor $7329 Sep — 33.3% peer $227 / anchor $68210 Sep — 33.3% peer $227 / anchor $68211 Sep — 33.3% peer $227 / anchor $68212 Sep — 27.6% peer $226 / anchor $82113 Sep — 32.6% peer $226 / anchor $69414 Sep — 32.6% peer $226 / anchor $69415 Sep — 30.9% peer $226 / anchor $73116 Sep — 30.9% peer $226 / anchor $73117 Sep — 30.9% peer $226 / anchor $73118 Sep — 30.9% peer $226 / anchor $73319 Sep — 29.9% peer $219 / anchor $73320 Sep — 29.9% peer $219 / anchor $73321 Sep — 33.3% peer $217 / anchor $65222 Sep — 33.3% peer $217 / anchor $65223 Sep — 33.3% peer $217 / anchor $65224 Sep — 33.3% peer $217 / anchor $65225 Sep — 29% peer $218 / anchor $75226 Sep — 29% peer $218 / anchor $75227 Sep — 29% peer $218 / anchor $75228 Sep — 29% peer $218 / anchor $75229 Sep — 35.4% peer $250 / anchor $70430 Sep — 35.4% peer $250 / anchor $7041 Oct — 39.3% peer $252 / anchor $6402 Oct — 39.3% peer $252 / anchor $6403 Oct — 39.7% peer $254 / anchor $6404 Oct — 38.9% peer $254 / anchor $6525 Oct — 38.9% peer $254 / anchor $6526 Oct — 34.2% peer $248 / anchor $7257 Oct — 34.2% peer $248 / anchor $7258 Oct — 34.2% peer $248 / anchor $7259 Oct — 10.9% peer $1,049 / anchor $9,60010 Oct — 12% peer $1,150 / anchor $9,60011 Oct — 10.7% peer $1,025 / anchor $9,60012 Oct — 5.8% peer $1,100 / anchor $19,00013 Oct — 24.4% peer $219 / anchor $89914 Oct — 24.4% peer $219 / anchor $89915 Oct — 24.8% peer $223 / anchor $89916 Oct — 24.1% peer $223 / anchor $92617 Oct — 24.1% peer $223 / anchor $92618 Oct — 23.8% peer $217 / anchor $91119 Oct — 23.8% peer $217 / anchor $91123.8% now28 Aug19 Oct
Ratio of Mario Lemieux's 1985-86 O-Pee-Chee #9 to Wayne Gretzky's 1979-80 O-Pee-Chee #18. Gold fill marks where the ratio sits below the baseline, rose where it sits above. The shaded stretch on the right is held out of the baseline on purpose — see the method below. Hover any point for its values; every number is in the table.
Every recorded observation
ObservedRatioPeerAnchorvs baseline
2026-10-1923.8%$217$911—
2026-10-1823.8%$217$911—
2026-10-1724.1%$223$926—
2026-10-1624.1%$223$926—
2026-10-1524.8%$223$899—
2026-10-1424.4%$219$899—
2026-10-1324.4%$219$899—
2026-10-125.8%$1,100$19,000—
2026-10-1110.7%$1,025$9,600—
2026-10-1012%$1,150$9,600—
2026-10-0910.9%$1,049$9,600—
2026-10-0834.2%$248$725—
2026-10-0734.2%$248$725—
2026-10-0634.2%$248$725—
2026-10-0538.9%$254$652—
2026-10-0438.9%$254$652—
2026-10-0339.7%$254$640—
2026-10-0239.3%$252$640—
2026-10-0139.3%$252$640—
2026-09-3035.4%$250$704—
2026-09-2935.4%$250$704—
2026-09-2829%$218$752—
2026-09-2729%$218$752—
2026-09-2629%$218$752—
2026-09-2529%$218$752—
2026-09-2433.3%$217$652—
2026-09-2333.3%$217$652—
2026-09-2233.3%$217$652—
2026-09-2133.3%$217$652—
2026-09-2029.9%$219$733—
2026-09-1929.9%$219$733—
2026-09-1830.9%$226$733—
2026-09-1730.9%$226$731—
2026-09-1630.9%$226$731—
2026-09-1530.9%$226$731—
2026-09-1432.6%$226$694—
2026-09-1332.6%$226$694—
2026-09-1227.6%$226$821—
2026-09-1133.3%$227$682—
2026-09-1033.3%$227$682—

Why these two

The two franchise rookie cards of hockey's modern era, from the same product line six years apart, bought by the same collector. Note both are O-Pee-Chee rather than the Topps versions that share their card numbers.

What would make this wrong

Hockey has the thinnest comp pool of any sport in this file, so both legs of this ratio are noisy month to month and a quiet month can look like a move.

How this is measured

Priced on ungraded (raw) copies, not the PSA 8 this pairing names — the price guide returned no value for those grades on this subscription, so both cards fell back to the same basis. The ratio is a like-for-like comparison and the history is sound; the grade in the card names above is what it does not describe.

Each scan records one number: the fair value of Mario Lemieux's 1985-86 O-Pee-Chee #9 divided by the fair value of Wayne Gretzky's 1979-80 O-Pee-Chee #18, both from comparable sales. The baseline is the median of those observations over 90 days — excluding the most recent 21, so a fresh move cannot drag down the very number it is being measured against. Below 8 observations there is no baseline and this page says so instead of showing one.

The baseline is never authored. It is the median of what was recorded, or it does not exist. Nobody types a target ratio into this system.

This is an observation about a historical relationship, not a forecast. A gap that never closes means the market permanently re-rated Mario Lemieux rather than temporarily forgot him — that is the risk in every pairing here, and it does not mean-revert on a schedule.

Look at the actual cards

Other pairings on the Lag Board

Bobby Orr vs Wayne GretzkyHakeem Olajuwon vs Michael JordanCharles Barkley vs Michael JordanScottie Pippen vs Michael Jordan

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