Colt Emerson is ranked as ESPN's No. 6 prospect for 2026.
The contract is valued at $95 million over 8 years.
Emerson has yet to make his major league debut.
Briefing: M's, Emerson agree to historic contract
Strategic angle: Mariners shortstop Colt Emerson signs an 8-year, $95M extension, marking a significant milestone for the team.