The Mariners reached agreement with Venezuelan outfielder Brayan Hernandez, 16, that includes a $1.85 million signing bonus, according to MLB.com.
The News Tribune previously reported a deal was in place between the Mariners and Hernandez, who is 6 feet 1 and 170 pounds. The international signing period started Wednesday.
Hernandez is ranked by Baseball America as the No. 3 overall international prospect. MLB.com also reported the Mariners also reached a deal with Dominican catcher Ismerlin Mota for $295,000.
Baseball America reported the Mariners signed three other players from the Dominican Republic: outfielder Danny Contreras, shortstop Steve Branche and right-handed pitcher Juan De Paula.
The Mariners have not confirmed any of the deals. The club can spend up $3,440,700 on international signings without fines or penalties from Major League Baseball.
Hernandez is the only one of the five ranked in Baseball America’s Top 30.