![Michael Porter Jr. [Ball at Waist Autograph] #137 Basketball Cards 2018 Panini Contenders trading card — raw and PSA graded price guide](https://i.ebayimg.com/images/g/F0YAAeSwh5Vp48eb/s-l1600.jpg)
Michael Porter Jr. [Ball at Waist Autograph] #137 Price Guide
Basketball · Basketball Cards 2018 Panini Contenders · Released 2018
Michael Porter Jr. [Ball at Waist Autograph] #137 (Basketball Cards 2018 Panini Contenders) is currently worth $67.00 raw (near mint) and $51.01 in PSA 10 (as of Jul 11, 2026). Values come from the PriceCharting price guide and are refreshed weekly. Grading is the single biggest value lever — check the raw-to-PSA-10 gap below, then scan your copy to see if its centering makes the grade.
Current prices
Raw (ungraded)
| Ungraded | $67.00 |
Graded — grade ladder
| Grade | PSA | CGC | BGS | SGC |
|---|---|---|---|---|
| 10 | $51.01 | $31.00 | $66.00 | $31.00 |
Last updated 2026-07-11 · Source: the PriceCharting price guide
Shop this card on eBay ↗As an eBay Partner, Midpoint may earn commission from qualifying purchases.
Is it worth grading?
Grading rarely pays for this card
PSA 10 copies of Michael Porter Jr. [Ball at Waist Autograph] #137 sell for $51.01, only $0.00 above the $67.00 raw price — less than an economy-tier grading fee. Keep it raw unless you are grading for the slab itself.
Should I pay this?
Enter the seller’s asking price to see your net outcome per grade.
More from 2018 Panini Contenders
Full set checklist →![Shai Gilgeous Alexander [Ball Low Autograph Premium] #106 2018 Panini Contenders card](https://i.ebayimg.com/images/g/o9sAAeSw0gFoPZJk/s-l500.jpg)
![Kevin Durant [Premium Gold] #8 2018 Panini Contenders card](https://i.ebayimg.com/images/g/4LoAAOSwNcdlBLRW/s-l500.jpg)
![Jaren Jackson Jr. [Looking Up Autograph] #132 2018 Panini Contenders card](https://i.ebayimg.com/images/g/IxYAAeSwdzppBAXj/s-l500.jpg)
More Michael Porter Jr. cards
All Michael Porter Jr. cards →![Michael Porter Jr. [Tiger Stripe Choice Prizm] #32 2018 Panini Prizm card](https://i.ebayimg.com/images/g/TVIAAeSwEPFp68Uh/s-l500.jpg)
![Michael Porter Jr. [Gold] #MP 2018 Panini Certified Rookie Roll Call Autographs card](https://i.ebayimg.com/images/g/p0kAAeSwB5hpYFm9/s-l500.jpg)
![Michael Porter Jr. [Shoe Visible Autograph Red] #120 2018 Panini Contenders Optic card](https://i.ebayimg.com/images/g/4N0AAeSwCRdphxbo/s-l500.jpg)
![Michael Porter Jr. [Tie Dye Prizm] #MPJ 2018 Panini Select Rookie Signatures card](https://i.ebayimg.com/images/g/JfMAAeSwCctp29Pc/s-l500.jpg)
![Michael Porter Jr. [Neon Green] #MPJ 2018 Panini Select Rookie Signatures card](https://i.ebayimg.com/images/g/fbUAAeSw1vZqXg6e/s-l500.jpg)
Price alert
Watching this card? Set a line and Midpoint emails you the day the market crosses it — waiting to buy the dip or sell the spike.
Michael Porter Jr. [Ball at Waist Autograph] #137 — frequently asked
How much is Michael Porter Jr. [Ball at Waist Autograph] #137 (Basketball Cards 2018 Panini Contenders) worth?
As of Jul 11, 2026, Michael Porter Jr. [Ball at Waist Autograph] #137 (Basketball Cards 2018 Panini Contenders): an ungraded near-mint copy sells for about $67.00, a PSA 10 sells for about $51.01. Values come from the PriceCharting price guide and are refreshed weekly.
How much is a PSA 10 Michael Porter Jr. [Ball at Waist Autograph] #137 worth?
As of Jul 11, 2026, a PSA 10 (Gem Mint) Michael Porter Jr. [Ball at Waist Autograph] #137 (Basketball Cards 2018 Panini Contenders) sells for about $51.01, compared with $67.00 for a raw near-mint copy.
Is Michael Porter Jr. [Ball at Waist Autograph] #137 worth grading?
PSA 10 copies of Michael Porter Jr. [Ball at Waist Autograph] #137 sell for $51.01, only $0.00 above the $67.00 raw price — less than an economy-tier grading fee. Keep it raw unless you are grading for the slab itself.
Where do these Basketball card prices come from?
Prices are the PriceCharting price guide, refreshed weekly. Raw values reflect near-mint (NM) ungraded copies; graded values are per grading company and grade.
Is your basketball card centered well enough to grade?
Centering makes or breaks a PSA 10. Scan any card with Midpoint to measure its exact centering, get a grade estimate, and see what your copy is actually worth.
Check my card free