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The article discusses baseball home runs in the late 19th-century Major Leagues. Topics mentioned include the first 48 years of major league baseball from the National Association in 1871 through 1918, what part the home run played in the early game, and the total number of major league home runs hit each year. It explores the possible reasons of the 19th-century peak of home run production in 1890 since 1881.

The article focuses on how sports psychology was practiced during the formative years of the Chicago Cubs baseball team in the 1930s. Topics discussed include the scientific research aimed at improving player performance introduced by club owner Philip Knight Wrigley and collaboration with University of Illinois psychologist Coleman Roberts Griffith considered for his study on sports psychology. Griffith's publication of team performance metrics and his conflict with team members are mentioned.