The Philadelphia Phillies beat the St Louis Cardinals 12-3 on 22 August 2026. They won again the next day on 23 August 2026. They swept the series. They won nine games in a row. The team had an eight-game winning run earlier this month.

Cardinals prospect Mathews started his third career game. He surrendered early runs. In the ninth inning, St Louis fell behind after Philadelphia scored six runs. A walk-off home run ended the game. That sealed the win. It was the club's first walk-off home run in three years.