correct me if I'm wrong, but the team that wins the first game is approximately 70% more likely to win the second game due to the momentum of the winning team. EQUINEBOSS writes: When is the question being posed? Both teams have a 100% chance before the first game is completed. Once completed, one team (the loser of the first game) has a 0% chance of sweeping and the other team (winner of the first game) has only a 50% chance of completing the feat. Not taking into account the ability of either team, once one of the two teams has won the first game, it is simply a 50/50 chance of sweeping the double header by winning the second game. The reason we do not see many teams taking "both ends" of a doubleheader is also simple. Most teams play at or around the .500 mark in Baseball. That being said, most teams only have a 50% chance of winning (or if you are a negative sort, a 50% chance of losing) any given game. Add in the desire and pride of a professional athlete not to lose twice in one day and it makes winning two games that much harder. But, that leaves math and starts adding in the human equation.
Chat with our AI personalities