Golf Drivers: The Evolution of the Supersized Club
Credit: Stan Badz / PGA Tour / Getty Images

Twenty years ago, Callaway's Big Bertha – named after a WWI German howitzer – had both the size and power to justify the comparison. Founder Ely Callaway recruited engineers to develop a more forgiving, longer-hitting club, and the result proved to be a smash with both pros (by 1994 it was the number one driver on the PGA Tour) and amateurs. It took Callaway from $55 million in sales in 1991 to $557 million in 1995. "Until the Big Bertha, the driver was the most-feared club in the high handicapper's bag," says Luke Williams, Callaway's senior global director of woods and irons. "That was Ely's eureka moment – to make the game more enjoyable for the average player. And it didn't hurt that the aerospace industry started to ramp down in the Eighties. Engineering talent made its way into the golf industry and enabled breakthroughs that we continue to refine to this day." Their latest: the RAZR Fit, which uses a carbon composite developed in tandem with Lamborghini to help the club produce the desired high-launch, low-spin ball flight.