The birds are hot! What can we attribute this spicy streak to?... It's Gotta Be the Salsa! Head to Busch Stadium on Thursday, September 13 when the Cards host the Dodgers and celebrate with number 13 and his teammates. That day, 20,000 fans ages 16 and over will take home their very own September T-shirt of the Month commemorating the Salsa craze, designed by Fresh Brewed Tees.