Swing kings

"We are in a historic era for the home run. The 2017 season saw the most homers ever, with 2016 and 2018 close behind, a shift that has transformed the way the game is played. . . Wall Street Journal national baseball writer Jared Diamond reveals that the secret behind this unprecedented shift isn't steroids or the stitching of the baseballs, it's the most elemental explanation of all: the swing. [Diamond] . . . tracks a group of baseball's biggest stars-- including Aaron Judge and J.D. Martinez--who remade their swings under the tutelage of a band of renegade coaches, and remade the game of baseball in the process"--Provided by publisher.