Astros lefthander Dallas Keuchel, who has pitched in relief this season, vows to attack the zone when he makes his first start of the season Friday night against the Rangers. Keuchel was 3-8 with a 5.27 ERA over 16 starts in the majors last season, but he began this season in the bullpen. He’s 0-1 with a 4.96 ERA over 16 1/3 innings through six appearances this season. “It’s a new year, and I got my feet wet last year,” Keuchel said. “The only thing that I thought that held me back last year was not realizing how tired I was from all the wear and tear of going up [...]