I remember that show as well! Nicknamed "The Good Game of the South."
Unfortunately, KTXH-20 aired it only on a limited basis provided that the Houston Astros were playing an away game on EST (New York, Philadelphia, Cincinnati, Pittsburgh, Montreal, Atlanta: Florida wasn't in then). Sometimes for west coast games (Los Angeles, San Francisco, San Diego: No Arizona or Colorado).
IE: 6:00- Grandstand
6:30- Astros @ Montreal Expos