A win over the Reds drops the magic number for the Cardinals down to 8. The Pirates won in Colorado which keeps the division lead still at four games.
Cardinals magic number to clinch the Central Division — 8
Cardinals 95-56
Pittsburgh 91-60
The Royals dropped the series opener with Seattle and the Twins won over Cleveland so the Royals magic number is unchanged.
Royals magic number to clinch the Central Division — 3
Royals 87-63
Minnesota 77-73
The magic number is determined by taking 163 and subtracting the number of wins for the Cardinals (or Royals) and subtracting the number of losses for the Pirates (and Twins) respectively.