Mark McGwire homered and knocked in five runs to lead the St. Louis Cardinals to a 10-3 win over Milwaukee. Matt Morris went six innings, allowing just three hits and no runs while striking out ten to improve to 22-8. With the win, the Cardinals clinch at least a tie for the National League wildcard birth. They also take a one-game lead in the National League Central race because the Houston Astros lost to San Francisco 10-2. The Cardinals and the Astros play a three-game series in St. Louis this weekend for the title.