In the 1970s, after a decade of stagnant fan interest that seemed to signal the demise of Major League Baseball, the game saw growth and change. In 1972, the players became the first in professional sports to go on strike. Four years later, contractual changes allowed those with six years in the majors to become free agents, leading to an unprecedented increase in salaries. Developments in the play of the game included new ballparks with faster...