What happened: Japanese infielder Teruaki Sato has officially entered Major League Baseball's posting system. The move formalizes the Hanshin Tigers' release of their franchise cornerstone to major league suitors.

Why it matters: Sato enters the market as an elite power option capable of anchoring a lineup after six standout seasons in Nippon Professional Baseball. His availability triggers an immediate bidding war among contenders prioritizing middle-of-the-order production.

What to watch: Clubs have a 45-day window to negotiate a contract before posting rights expire.