The Phillies use nine hits – one by each starter – to beat the Cubs, 4 – 3, and drop the Cubs from first to third. The Phils move into second place behind the Giants. Eppa Rixey is the winner for the Quakers.

On May 21, 1917 — The Phillies use nine hits – one by each starter – to beat the Cubs, 4 – 3, and drop the Cubs from first to third. The Phils move into second place behind the Giants. Eppa Rixey is the winner for the Quakers.

Source:
Baseball Reference May 21