This market resolves YES after the MLB officially announces that a team will be based in Las Vegas, Nevada, and that team plays a home game in the Las Vegas area. Only the official announcement needs to occur before 1 January 2030; the home game may occur after 1 January 2030.
Related questions
A's officially leaving Oakland after 2024, will play in Sacramento through 2027 until Vegas stadium is ready
https://www.cbssports.com/mlb/news/as-officially-leaving-oakland-after-2024-will-play-in-sacramento-through-2027-until-vegas-stadium-is-ready/
[MLB Commissioner] would be disappointed if A’s Las Vegas ballpark not open by 2028, skeptical of Olympics
"Manfred said a decision to expand to 32 teams could be made within five years but the new teams wouldn’t start play until 2029 at the earliest."
https://apnews.com/article/mlb-owners-as-olympics-eb8546d78d9b556488d4748395dbf584
I thought my resolution criteria were watertight, but there appears to be some ambiguity with the A’s looking for a temporary home. I am going to sell my shares in each of my MLB expansion markets to avoid conflict of interest and put my profits thus far into the respective market’s liquidity.
The first requirement for YES has been met:
https://www.mlb.com/athletics/news/athletics-statement-on-relocation