Mariners sign 17-year-old Dominican shortstop Esteilon Peguero for $2.9 million

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Seattle has been quiet on the free agent and trade front so far this offseason, but the Mariners made a big splash in the international prospect market yesterday by signing 17-year-old Dominican shortstop Esteilon Peguero for $2.9 million.

According to Ben Badler of Baseball America that represents the highest signing bonus given to an international prospect this year, topping the $2.8 million Venezuelan pitcher Adonis Cardona received from the Blue Jays in July, and is the fourth-highest total of all time behind Michael Ynoa, Miguel Sano, and Gary Sanchez.

Seattle previously handed out a $2.2 million bonus to Dominican outfielder Phillips Castillo in July, so while their major-league team disappointed in a big way this year the Mariners are making a huge effort to beef up their farm system.

Badler reports that Peguero is a 6-foot-1, 185-pound shortstop with “good bat speed” who’s likely to move to second or third base eventually. He also offers up some video of Peguero in action and Baseball America has a more in-depth scouting report as well.