CALLAWAY BIG BERTHA OS
PRICE R21 499 GRAPHITE R18 499 STEEL PERFORMANCE ★★ ★ ★ ★ INNOVATION ★★ ★ ★ ★
VERDICT Last year’s XR OS was a super game-improvement iron hidden in a smaller shape. This year, no such subtlety was attempted. The Big Bertha OS is, well, big, and it’s suitable for those needing help with launch, distance and direction. The irons use what Callaway calls an “exo-cage” that alters the stiffness of the club’s body in certain areas and allows weight to be placed where it’s most effective. It also lets the revamped cupface (where the face wraps around part of the topline and sole to increase face flex) to function more efficiently. COMMENTS (M) Colossal distance. Ball goes a mile in the air. (H) Long irons are so easy to hit, it eliminates the need for hybrids.