The long-term agreement, first reported earlier Tuesday, is now official. Emerson is widely regarded as one of the top prospects in baseball and is expected to be a key piece of Seattle’s roster through at least 2033. The 20-year-old prodigy’s combination of bat-to-ball skills and emerging power makes it easy to envision him as an impactful fantasy contributor in the near future. There has been no indication the Mariners plan to accelerate his timeline at Triple-A this season, but his arrival as the club’s shortstop of the future feels almost inevitable, especially since J.P. Crawford hitting free agency at the end of the year.