Toro HR hours after trading sides, but Astros beat Mariners
Taylor Trammell may end up being Mariners' left fielder - The Columbian
Minor League Opening Day 2021
Trade Rumors and News: Mariners Santiago removed from game after foreign substance check - MLB Daily Dish
Seattle Mariners minor league affiliate to debut vaccinated sections - Puget Sound Business Journal
Julio Rodriguez Wants to End Seattle Mariners Postseason Drought - The New York Times
George Kirby shined & the offense showed up to keep the Mariners in the playoff hunt
2021 Mariners minor league affiliates rosters revealed - Lookout Landing
Mariners Minor League Report — Sept. 18, by Mariners PR