Roki Sasaki
Japanese Pitching Phenom / MLB Prospect · Baseball - NPB/MLB
Chiba Lotte Marines / Los Angeles Dodgers (Projected/Fantasy)
Era
Current / Modern Era (circa 2024-2025)
Item Type
Custom or 'Fantasy' Trading Card
Condition
Near Mint (NM). The card is in a plastic top-loader, and the signature is bold, though the card itself is an unofficial manufacture which significantly affects value.
Rarity
Common to Moderate. Custom cards with forged or unverified 'ip' (in-person) signatures are increasingly common for high-profile international prospects.
Overall Assessment
This appears to be a 'fantasy' or 'custom' item intended for novelty. While it represents a highly desirable player, the unverified signature on a speculative card design makes it a 'filler' piece rather than a blue-chip collectible.
Authenticity Assessment
Questionable - several concerns noted. While it mimics his 'RS' loop style, the speed and fluid tailing found in authentic NPB-era examples are lacking here.
Signature Style
Abbreviated stylized monogram featuring a large 'R' loop and a sharp 'S' descender. It lacks his traditional kanji or full Western script sometimes seen on high-end releases.
Signature Characteristics
Features a large looping 'R' transitioning into a vertical 'S'. The baseline is slanted. There is a noticeable hesitation at the loop join, which is a red flag for tracing or slow imitation.
Ink & Medium
Black felt-tip permanent marker (Sharpie-style) on a glossy card surface. The ink appears to sit on top of the card without the natural 'drag' or pressure variance typical of a hand-signed piece.
Item Description
Speculative/Custom Los Angeles Dodgers rookie card. Note that Roki Sasaki has not officially signed with the Dodgers as of the current MLB timeline, making this a 'custom' or printed 'fan art' card rather than a licensed Topps release.
Estimated Value
$10.00 - $30.00 USD. As a custom/unlicensed card with a likely 'in-person' style signature of unverified origin, it holds little value in the professional hobby market compared to his NPB certified autos.
Comparison to Known Examples
Lacks the extremely high-speed 'whiplash' effect seen in his official Chiba Lotte Marines certified cards. The proportions of the 'R' loop are overly rounded compared to his tighter, more vertical authentic habits.
Authentication Tips
Look for a very fast, single-motion flow. Authentics usually have a thinner pen stroke and a more aggressive flick at the end of the 'S'. Beware of signatures on cards that do not officially exist (like a 2025 Dodgers card years early).
Certification Recommendation
JSA or Beckett (BAS). However, authenticators are often hesitant to slab signatures on 'custom' or 'counterfeit' card stock.
Red Flags
Significant red flag: The card itself is a fantasy/custom creation showing Sasaki as a Dodger with a 2025 debut date. This strongly suggests the signature was applied by the card creator or a third party rather than the athlete.
Provenance Notes
No provenance provided. Typically, high-value international autographs require a photo of the athlete signing or a certified sticker from a Japanese agency (like Epoch or BBM).
Historical Context
Sasaki is famous for throwing a 19-strikeout perfect game in the NPB at age 20. He is considered the next great pitching export from Japan.
Market Trends
Sasaki's market is volatile and high-demand due to his impending MLB posting. However, collectors favor official Japanese cards over custom-made American-style cards.
Investment Potential
Low. Custom cards with unverified signatures rarely appreciate. Investment should be focused on his official BBM or Epoch Japanese rookie cards.
Similar Autographs
Shohei Ohtani, Yoshinobu Yamamoto, Munetaka Murakami.
Display & Preservation
Keep in a UV-protected magnetic one-touch holder. Since this is a custom card, the ink may react with lower-quality plastics over time.
Interesting Facts
Sasaki was known for being a very difficult autograph to obtain in Japan due to team security, making genuine 'in-person' examples on American card stock quite rare.