#4 - CALLAWAY BIG BERTHA DRIVER (1991)
The Big Bertha driver knocked every other persimmon, small-headed club out the ballpark when it was launched 21 years ago since it was crafted entirely of stainless steel and featured a gigantic 190cc head.
How times have changed, when you consider drivers today contain head sizes up to the USGA legal maximum of 460cc.
Besides setting a new standard for size and materials, the Big Bertha - named after a German WW1 howitzer by founder Ely Callaway - was revolutionary in that it put more weight around the clubhead’s perimeter resulting in a thinner, more forgiving clubface.
REVIEW: CALLAWAY BIG BERTHA EPIC DRIVER
REVIEW: CALLAWAY BIG BERTHA EPIC SUB ZERO DRIVER
Big Bertha was to quickly prove the catalyst for the design of bigger clubheads and subsequently saw the introduction of titanium clubheads in its second generation.
The driver may have retailed at the high end of the spectrum but it certainly did the business - and not only for its customers as Callaway’s sales for the club reached a whopping $54.7million.
Callaway Big Bertha Fusion driver review by GolfMagic
Callaway then relaunched the Big Bertha brand in 2014 with its Big Bertha Alpha with Gravity Core technology.
The present day welcomes the Great Big Bertha Epic and Epic Sub Zero for better players, and a more forgiving Big Bertha Fusion better suited for game-improvement players.