The Cubs move into first place in the National League when a 9-run 9th inning gives them a 11 – 6 win and doubleheader sweep at Brooklyn. Chicago takes the opener, 6 – 4. For the second day in a row, a disputed call – this one by Frank Wilson – causes fans to stop the game. Meanwhile, the Pirates are beating New York for the third straight game, 5 – 3.

On May 21, 1927 — The Cubs move into first place in the National League when a 9-run 9th inning gives them a 11 – 6 win and doubleheader sweep at Brooklyn. Chicago takes the opener, 6 – 4. For the second day in a row, a disputed call – this one by Frank Wilson – causes fans to stop the game. Meanwhile, the Pirates are beating New York for the third straight game, 5 – 3.

Source:
Baseball Reference May 21