CHICAGO — In 1969, when the Chicago Cubs found themselves in a pennant race for the first time in decades and the games at Wrigley Field suddenly began to matter, pitcher Dick Selma would ritually rise from his seat in the bullpen down the left-field line and wave a white towel over his head, rallying the fans in the bleachers to make some noise.
Two years ago, another pitcher stationed in the bullpen, Jason Motte, began clapping his hands and stomping his feet to Starlin Castro’s rollicking walk-up song, and soon the entire ballpark was following suit.