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Astros Reach Reported Three-Year Deal With Japan’s Tatsuya Imai Worth Up to $63 Million

Sources say the contract includes yearly opt-outs, reflecting a short-term bet that also triggers a posting fee to Seibu.

Overview

  • Multiple outlets including MLB.com, ESPN and the AP report an agreement, though the Astros have not announced it.
  • The pact guarantees $54 million with performance escalators lifting the value to $63 million and includes opt-outs after each season.
  • The Associated Press reports Seibu will receive a posting fee of about $9.675 million plus 15% of any earned bonuses or salary escalators.
  • The deal comes as Imai’s 45-day posting window nears its deadline of Friday at 5 p.m. EST under the MLBNPB agreement.
  • Imai, 27, posted a 1.92 ERA with 178 strikeouts in 163 2/3 innings in 2025 for Seibu, with an AAV that ranks among the highest for a Japanese pitcher, per reports.