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Keyner Martinez was just added to the PCR board, so his market has not been measured yet. Live listings appear below, and verified prices land here after the next price run.
Nothing here is an estimate. We publish a price only after measuring real listings and sales for him.
Higher = better. 50th is league median, 90th+ is elite. The orange Card Market bar shows where the price ranks — not whether it’s a good buy.
As of September 20, 2026, Prospect Card Radar does not have enough verified data to call Keyner Martinez’s 1st Bowman Chrome auto overpriced or underpriced. There is no confirmed sold comp for his base 1st auto and 0 active listings to price against, which is too thin to call over- or underpriced honestly. What we can say: his arm ranks in the 52nd percentile of 124 tracked prospect pitchers (4.77 FIP over 93.2 innings at Single-A), measured September 19, 2026. A verdict is published only once on-field percentiles and a price we can stand behind are both available, so this page will carry one as soon as that data lands.
Keyner Martinez is ranked #100 in the Prospect Card Radar composite top 300, which blends MLB Pipeline, Fangraphs, and Baseball America rankings. Individual source ranks are listed at the top of his prospect page.
Keyner Martinez plays SP in the Giants organization.
Prospect Card Radar tracks live Keyner Martinez card listings, recently delisted cards, real sold values, and 30-day price history at https://prospectcardradar.com/prospects/keyner-martinez. Listings update continuously throughout the day.
Prospect Card Radar pulls live active listings from eBay, filters to base 1st autographs (numbered parallels, refractor colors, superfractors, and printing plates excluded), and computes a rolling average. Raw and PSA 10 averages are tracked separately. Methodology details at https://prospectcardradar.com/methodology.
Answers are generated from Prospect Card Radar’s own daily data and carry the date they were computed. Percentiles compare this prospect against the tracked pool; sold values come from SportsCardsPro; asking prices come from live eBay listings.
