In the early days of “modern” irons, forged blades were king. These simple muscle-backs (like the old Titleist 681/690 or Mizuno MP series) gave unparalleled feel and shot-shaping for skilled players, but punished even slight mishits. The real revolution came with cavity-back designs that shifted weight behind the face. A prime example is the PING Eye 2 (first released in 1979), which pioneered perimeter weighting and tungsten heel/toe weights to dramatically raise forgiveness. Its signature design set the standard for cavity-back irons and changed the game for millions of golfers.

Meanwhile, serious players still prized their blades. Titleist’s classic MB line (and similar wrought irons) remained staples on tour for their pure feedback. Notably, Adam Scott has gamed Titleist’s 680 blades since the early 2000s – even saying he “fell back into the 680s” after trying newer models, because their modest offset and long, sleek shape suited him. These true blades were celebrated for feel and precision, though they demanded near-perfect contact.

The 1990s and 2000s saw more game-improvement irons emerge. Brands like Callaway and TaylorMade introduced oversized hollow-body designs (for example, the original Big Bertha irons and TaylorMade’s early Burner series) to push forgiveness and distance to the masses. These clubs began to incorporate multi-material faces, adjustable weighting and advanced engineering to help even amateur swings. In short, each “legendary” iron in this discussion brought something special – whether it was pure forged feel or groundbreaking forgiveness – that moved the game forward.