Mariners prospect to sign historic deal (source) - MLB.com

1. Mariners prospect to sign historic deal (source)  MLB.com
2. Mariners become first team to sign a player at Double-A level to a long-term extension, per report  CBS Sports
3. Seattle Mariners sign Evan White to MLB deal before his debut  SoDo Mojo
4. Mariners, Evan White Agree To Long-Term Contract  MLB Trade Rumors
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