This is from 2009. Is this still the rule on Sunday?
8. In the event of a rain-delay prior to the beginning of play on Sunday, the game must begin at least two hours and thirty
minutes prior to the visiting teams scheduled departure time from the field, but no later than 4 p.m. local time to avoid a rain
out of the game. (See Departure Time of this section.)
If the game begins and is delayed, it must resume by 6 p.m. local time to avoid a rain out of the game.
In all instances, departure time takes priority. A team may not stay over until Monday to begin or complete a game or series.
In the event the visiting team is not scheduled to leave the host city until Monday and there are no prior travel limitations for
the games umpires that would dictate departure to enact these deadlines, with Conference approval, it would be permissible
to waive the 4 p.m. deadline for the start of a game and a 6 p.m. deadline for the resumption of the game.