Steve Carlton outduels Steve Blass as St. Louis edges Pittsburgh, 1 – 0, giving the defending World Champs their 4th win in 5 tries and leaving them atop the National League at 20-10, 3 1/2 games ahead of San Francisco. In the next two weeks, the Cards will go into their only significant slump of the season; by May 29th, they’ll have lost 11 of 13 and fallen to 4th place, 3 behind the league-leading Giants.

On May 15, 1968 — Steve Carlton outduels Steve Blass as St. Louis edges Pittsburgh, 1 – 0, giving the defending World Champs their 4th win in 5 tries and leaving them atop the National League at 20-10, 3 1/2 games ahead of San Francisco. In the next two weeks, the Cards will go into their only significant slump of the season; by May 29th, they’ll have lost 11 of 13 and fallen to 4th place, 3 behind the league-leading Giants.

Source:
Baseball Reference May 15