What were MLB's most impactful offseason trades? Bowden ranks and grades the top 10 - The Athletic
Yusmeiro Petit signing: 5 reasons to love the Oakland A's new reliever - Athletics Nation
2022 American League West Preview: The Bullpens - Lookout Landing
Report: A's reach deal with former Giants reliever Petit
What Jake Diekman and Matt Strahm, the Red Sox' two new lefty relievers, bring to the bullpen - The Boston Globe
Oakland A's non-tender Mike Fiers, Kendall Graveman, Cory Gearrin - Athletics Nation
Angels swept by Athletics despite Shohei Ohtani's 19th homer - Los Angeles Times
Reid Detmers' debut spoiled by Oakland's power offense - Halos Heaven
Yusmeiro Petit - Wikipedia
Newest Dodgers reliever Blake Treinen: 'I'm not a broken pitcher' – Orange County Register
Orioles acquire right-handed reliever Shintaro Fujinami from Athletics for minor leaguer
2018 MLB team preview: The Oakland A's are going to hit a lot of home runs - Bless You Boys