In this Feb. 24, 2018, file photo, Chicago Cubs manager Joe Maddon visits the mound during the second inning of a spring training baseball game against the Texas Rangers, in Mesa, Ariz. In the aftermath of Chicago‚Äôs collapse last season, Cubs manager Joe Maddon went looking for a deeper understanding of the players who dominate the major leagues these days. Maddon‚Äôs search took him to ‚ÄúManaging Millennials for Dummies,‚Äù and the book reinforced what he already felt about the people he worked with every day.