Seattle Mariners minor league affiliate to debut vaccinated sections - Puget Sound Business Journal
D-backs become buyers at trade deadline, add Mariners closer Paul Sewald in exchange for 3 players - ABC News
Seattle Mariners - Wikipedia
Mariners' Gonzales ends 8-start skid - The Columbian
The Minor League Daily Sheet, May 9th 2021, C.J. Abrams — Prospects Live
2021 Mariners minor league affiliates rosters revealed - Lookout Landing
Mariners Minor League Roundup: April 25-30 - Lookout Landing
Lux's 3-run homer in 8th rallies Dodgers past Mariners 6-4
Mariners prospects at 2021 All-Star Futures Game
Riley O'Brien - Wikipedia