First-year Astros manager Bo Porter unveiled a new term Saturday: selective aggression. Porter employed the phrase while discussing his team’s quick-attack offense, which had outscored opponents 21-1 during the first three innings of the last three games. During a six-game losing streak, the Astros tried to accomplish too much as individuals and got away from the team-based, high-volume baseball that showed promise during spring training. During a three-game winning streak heading into a late Saturday matchup against the Angels, Astros batters extended their plate appearances, then attacked when an ideal pitch appeared in their zone. The club hit .393 (48-of-122) with nine home runs, 12 doubles and 29 runs, while [...]