Oakland A's roster moves: Three new arms join bullpen - Athletics Nation
Oakland A's roster moves: Luis Barrera called up, Billy McKinney DFA'd - Athletics Nation
Oakland Athletics 2020 Top 50 Prospects
Oakland A's 2021 Community Prospect List: The final Top 30 list! - Athletics Nation
2022 Washington Nationals season - Wikipedia
Lerners To Explore Possibility Of Selling Nationals - MLB Trade Rumors
A's set to sign Mitch Moreland, an experienced left-handed bat
Nationals vs. Marlins - Reporte de Juego - 24 agosto, 2021 - ESPN
Rookie Luis Barrera hits walk-off homer, first career blast lifts A's
Gabe Klobosits - Wikipedia
Top Dynasty Keepers: Eury Perez & Braxton Garrett
A's veteran Estrada getting his work in
Players Making Significant Jumps Up West Top 30 Prospects Lists — College Baseball, MLB Draft, Prospects - Baseball America