If you watch the home broadcast for one of Yu Darvish’s starts for the Texas Rangers, you will, at some point, hear play-by-play man Steve Busby exhorting, “got him swinging,” after Darvish fans a batter. You’ll hear it a lot, too. After fanning seven Blue Jays on Saturday, Darvish (7-2) leads the majors with 118 strikeouts, and 12.02 strikeouts per nine innings. At his current pace he would become the first pitcher in over a decade to record 300 Ks in one season. While his immense talent was apparent during his time in Japan, after just a little more than...