The Phillies' game in Cincinnati on Tuesday night was suspended due to rain in the middle of the ninth inning, with both sides scoreless.
The pitching duel saw each team only muster two hits.
Reds starter Homer Bailey pitched eight scoreless innings, striking out 10, while Kyle Kendrick worked seven scoreless innings for the Phillies.
The start of Tuesday's game was delayed by an hour and 20 minutes due to rain.
The game is scheduled to resume at 5:30 p.m. Wednesday.
Phillippe Aumont was about to take the mound to face his first hitter of the game when the game was suspended. Reds shortstop Zack Cozart, batting second in his team's lineup, was to lead off.
Tuesday's was the first Phillies game suspended by rain since the team's World Series-clinching Game 5 win over Tampa Bay in 2008.