I've seen Pimike play some MLB series plays.
I do not play series directly but I do bet on teams that meet several specific criteria over an entire series.
Bet on home team that have the following:.
- 3rd game of series
- Have been favs first 2 games
- Have lost first two games
- Odds < -250 as favs (-250 is about breakeven. Lower odds make it +EV).
This situation doesn't arise often but typically home teams that are "better" than their opponent (as seen by the lines and stats), and have lost prior 2, will win the 3rd game in a series about 75% of the time under these conditions.
Its not a series bet but its betting on the final game of the series based upon prior 2 games.