Quality start doesn’t begin to describe Austin Gomber’s performance. How about dominating? Or commanding? Or just plain terrific? Whatever the adjective, Gomber sparkled in the Rockies’ 3-1 win over the Nationals on Tuesday night in Washington, D.C. “He’s a pitcher,” Rockies manager Bud Black told reporters. “He’s a guy who relies on all of his stuff and knows how to use it.” The left-hander, throwing a confounding curveball, was in command for all seven innings.