Roki Sasaki (Simulated/Custom)

Japanese Professional Baseball Pitcher (NBP) · Baseball - MLB/NPB

Chiba Lotte Marines / Future MLB Prospect

Roki Sasaki (Simulated/Custom)

Era

Modern Era - circa 2024-2025 (Projected/Fantasy)

Item Type

Custom/Fantasy Baseball Card

Condition

Excellent; signature is bold and centered, though the card itself is a custom matte/gloss hybrid with some surface scratches visible in the 'Dodgers' foil area.

Rarity

Unique. As a custom card, it is likely a one-of-one or very low production; Sasaki's autograph itself is highly sought after by North American collectors due to limited availability.

Overall Assessment

A fascinating 'custom' piece that captures the hype of a generational talent. While the card is unofficial, a verified authentic signature would make this a highly desirable 'pre-rookie' novelty for a Dodgers fan or Sasaki enthusiast.

Authenticity Assessment

Uncertain/Likely In-Person or Fantasy Creation - Low Confidence. The card itself is a custom/fantasy 'Topps' design featuring Sasaki in a Dodgers uniform before an official MLB signing, which usually indicates the signature was obtained in person on a custom item or is part of a high-end custom card art project.

Signature Style

Stylized monogram scrawl. It features a large, looping 'R' or 'S' characteristic of his fast, modern signing style often seen during Spring Training or NBP fan events. It lacks formal kanji, which is typical for his quick 'in-person' autographs.

Signature Characteristics

Single-stroke fluidity with high speed. The pressure is consistent throughout, suggesting a confident, rapid motion. The 'O' shape at the base is a common Sasaki flourish in his shortened signature.

Ink & Medium

Black thick-tip permanent marker (Sharpie style) on a glossy-finish trading card surface. The ink shows good adherence but slight surface streaking typical of non-prep glossy cards.

Item Description

A custom-made 'Topps' style card featuring Roki Sasaki in a Los Angeles Dodgers uniform. It includes a 'Rookie Debut' date of 3/19/2025 and an RC logo. Note: This is not an official Topps licensed product.

Estimated Value

$50 - $150 (As a 'Custom Art' or novelty piece). Value is speculative as the card is not an official release. If the signature is authenticated, value resides primarily in the 'graph' rather than the card stock.

Comparison to Known Examples

Matches his 'fast' signature style seen on Chiba Lotte Marines memorabilia, though slightly more vertical than typical horizontal signatures found on official cards.

Authentication Tips

Look for the sharp, whip-like tail on the bottom stroke and the smooth speed of the loops. Slow, shaky lines would indicate a tracer. Compare against Japanese 'BBM' certified cards for stroke consistency.

Certification Recommendation

Beckett Authentication Services (BAS) or JSA (James Spence Authentication). PSA/DNA is also a top choice for international baseball stars.

Red Flags

The primary red flag is the item itself: a fantasy card of a player on a team he has not yet officially joined. Authentication of the ink is mandatory as many 'custom' cards use autopen or printed signatures.

Provenance Notes

Essential to know where this was signed. Given he plays in Japan, evidence of a signing session or in-person encounter at a stadium is critical for this specific piece.

Historical Context

Roki Sasaki is famous for throwing a 19-strikeout perfect game in 2022. This autograph represents a 'what if' or future-looking piece of memorabilia regarding his move to Major League Baseball.

Market Trends

Sasaki's market is currently 'Hot' due to impending MLB posting rumors. Japanese pitching stars (Ohtani, Yamamoto) have created a massive bull market for similar high-end talent signatures.

Investment Potential

High if authenticated. Sasaki is arguably the most talented pitcher outside the US; his official MLB rookie cards and early signatures will likely appreciate significantly upon his arrival in the States.

Similar Autographs

Shohei Ohtani, Yoshinobu Yamamoto, Ichiro Suzuki.

Display & Preservation

House in a UV-protected magnetic one-touch holder. Keep away from direct sunlight to prevent the black marker from fading or 'ghosting' onto the plastic.

Interesting Facts

Sasaki rarely signs for US fans currently, making any Western-style card he signs a premium item for prospect collectors.

Identified on 7/9/2026
Roki Sasaki (Simulated/Custom) | Autograph Identifier