It's the 40th postponement of the season, one more than 2017.
Sunday's regularly scheduled game will move up from 1:35 p.m. to 12:05 p.m. The second game is scheduled for 6:05 p.m.
All fans holding tickets for Saturday's postponed game may attend the second game Sunday using their original tickets.
Nick Pivetta (6-7) will start for the NL East-leading Phillies and Luis Perdomo (1-4) will go for the Padres in the first game. Vince Velasquez (5-8) is set to start the second game for Philadelphia. San Diego hasn't announced its starter.
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