Where do Portland's MLB hopes stand after A's move to Las Vegas?
MLB in 2030: How Would an Expanded 16-Team Playoff Field Work? - The Ringer
If A's leave, here is Oakland's path to landing MLB expansion team
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Will there ever be another MLB expansion team? - Quora
Oakland A's expected move to Las Vegas may spark MLB expansion - CBS San Francisco
American League - Wikipedia
The business behind MLB expansion: Portland, Montreal and Raleigh taking different approaches to landing a team
Commentary: Is this the end of the National League as we know it? - Los Angeles Times