Not sure if its standard rule in all MLB or different for wach team here is how it works for Mn Twins
Target Field Rainout
In the event a regulation game, as defined by Major League Baseball (i.e. 4 1/2 innings if the Twins are ahead and five full innings if the visiting team is ahead or the game is tied), is not played due to weather, an act of God or any other reason, one of the following policies will apply:
The game will be:
- A. Rescheduled to an open day, or
- B. Rescheduled to a Day/Night Split Doubleheader(two separate games on the same date)
Keep your ticket as you will need it for entrance to the rescheduled game. Tickets for rescheduled game are not subject to refunds or exchanges. All tickets are valid only for the rescheduled game.
Suite Tickets
Suite tickets will be valid only for the rescheduled game.
Season Tickets
Full or Partial Season Tickets are valid only for the rescheduled game.
Group Tickets
Group Tickets are valid only for the rescheduled game.
Single-Game Tickets
Single-game tickets are valid only for the rescheduled game.