This article was originally published on www.si.com/mlb/mariners as New Seattle Mariners Trade Acquisition Among an Elite Group of Hitters. The Seattle Mariners knocked down the first domino of the MLB trade deadline season when they acquired first baseman Josh Naylor from the Arizona Diamondbacks on Thursday.

Much of the intrigue stems from the urgency the club feels to make the postseason for just the second time in the last 25 years, which was reflected in their trade last week for slugging first basema...

You know the major leaguers on the move -- but what about the potential stars of tomorrow headed the other way in those deals?