The Astros’ promising future will be on display Wednesday night on the Whataburger Field mound, where the South Texas weather won’t be the only thing bringing heat. With dirty blond locks flowing from his Corpus Christi Hooks cap and a menacing 98 mph fastball exploding out of his powerful right hand, Mike Foltynewicz will start Game 1 of the Texas League playoffs. In an organization loaded with high-end pitching prospects, Foltynewicz is one of the best. Barring injury, he’ll start checking his e-mail in a major league clubhouse perhaps as early as next year. For now, however, Foltynewicz will taste playoff baseball for the first time in his career Wednesday [...]