There's been no official word from the teams or information on when the game will be played.
The Cardinals are scheduled to play four games against the Detroit Tigers in the coming week, with games at Comerica Park on Monday and Tuesday followed by two games in St. Louis on Wednesday and Thursday.
The Cardinals are coming off a game Wednesday night at the Minnesota Twins.
"The following game is postponed".
The Cardinals were scheduled to visit the Brewers for Milwaukee's home opener but instead will isolate at the team's hotel.
The league, anticipating an increase in doubleheaders, has reportedly reached an agreement with the players' union to allow 7-inning games on doubleheader days. The Twins this weekend are playing host to the Indians. The Marlins had remained in Philadelphia, receiving tests and treatment there, but the Associated Press reported Friday morning that they were finally en route back to South Florida by bus. The Phillies had a series against the New York Yankees postponed earlier this week.
The Cardinals are the third team in the majors to suffer a positive test in the clubhouse just a week into the 2020 MLB season, joining the Miami Marlins and Philadelphia Phillies in having their season already drastically altered due to the virus. Down the road, there's an August 10-12 series in Milwaukee.