MINNEAPOLIS — Across the board, the Twins are league-average in several key offensive categories. Whether it’s runs scored, team on-base percentage, slugging percentage or total bases, the Twins are smack dab in the middle of all 30 Major League Baseball teams. But they’ve been tops in the league mostly all season in one category, an area of concern that likely has kept them from breaking through as an offense: strikeouts. When it comes to striking out, the Twins are kings of the castle. They’re not only No. 1 in the league. They’re running away from the field. Advertisement On Sunday…