Major League Baseball rarely faces a realistic challenge to its hegemony, but, 72 years ago this week, Danny Gardella became the first American-born player to sign with Jorge Pasquel's Mexican League, touching off a short war that challenged the reserve clause, increased salaries at home and abroad, and wound up ending both Gardella's career and the Mexican League's independence. Mike and Bill examine Gardella's life, Pasquel's insurgency, MLB's response, and the court battle that followed.