My mother grew up in Brooklyn, and the family were rabid Dodgers fans. She was in the car with my grandfather, listening to the game, when Thompson came to bat. She said, “He’s going to hit a homer.” Grampa said, “If he does, you walk home.” Well, he did stop the car, glared at her, and said, “You HAD to say it, didn’t you?” They drove off, but she still laughs about it - even while still being upset that the Dodgers lost.
Of course, when the Dodgers betrayed their fans by moving to El Lay, all of them became Dodgers haters. They ended up rooting for the Mets, and I got introduced to baseball as they were winning the Series in ‘69. Definitely one of her happier moments.
Actually, both of these teams 'betrayed' their fans at the same time! On 29 May 1957, the Giants and the Dodgers were given National League (NL) permission to move to California, San Francisco and Los Angeles respectively. It appears that they had to make the move together or not at all, so they actually moved in time for the 1958 season. It took 4 years to replace the NL franchise in NYC with the Mets in 1962. As for the AL, they got started in California with the Angels in 1961 and added the Seattle Pilots in 1967.