The Odyssey Ai-ONE Square 2 Square 7 Putter represents the cutting edge of Callaway's putter engineering — combining artificial intelligence face design with one of the most alignment-friendly head shapes in the game. The Square 2 Square (S2S) concept means the face and back of the putter are perfectly parallel, giving your eyes an unmistakable reference point at address and making it dramatically easier to set up square to your target line every single time. The result is a putter that removes one of the most common sources of missed putts before you even take the club back.
The Ai-ONE face insert is the star of the show — designed using Callaway's artificial intelligence to optimize ball speed, launch angle, and roll consistency across the entire face. Whether you catch it perfectly or slightly off-center, the Ai-ONE insert delivers a soft, responsive feel and a true, end-over-end roll that gets the ball tracking to the hole faster. The dark gunmetal/charcoal finish on the mallet head reduces glare and gives the putter a premium, modern look at address.
This right-hand example is fitted with the Odyssey Stroke Lab 90 shaft — a multi-material shaft combining steel and graphite to redistribute weight for improved tempo and consistency — and the Odyssey Square 2 Square grip in white and blue, which reinforces the square setup concept right through the hands. Measured at 34".
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Model: Odyssey Ai-ONE Square 2 Square 7
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Head Shape: Square Mallet (S2S 7)
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Hand: Right Hand
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Finish: Dark Gunmetal / Charcoal
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Length: 34"
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Shaft: Odyssey Stroke Lab 90 (Multi-material Steel/Graphite)
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Grip: Odyssey Square 2 Square (White/Blue)
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Insert: Ai-ONE Microstructured Face Insert
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Condition: Used – face and insert in excellent shape; minimal wear consistent with light use
