Fittingly, Ely Callaway’s posthumous book, “The Unconquerable Game ... creation of the groundbreaking but unconventional Big Bertha driver. Ely Callaway swam against the current in his ...

Fittingly, Ely Callaway’s posthumous book, “The Unconquerable Game ... Both the club itself as well as the name "Big Bertha" signaled a massive change in design, sound, playability and ...