Here's a closer look at the new Prototype AP1s.

Titleist Tour Rep Chris Tuten makes a new Prototype AP2 delivery.

Titleist Brand Ambassador Geoff Ogilvy hits the range for the first time with his new Prototype MB irons.

Geoff's irons are custom-stamped simply with "G."

Brand-new, bubble-wrapped Prototype CB irons ready for assembly Inside the Titleist Tour Van.

The Titleist Golf Club R&D team gathers information during new Prototyope AP2 testing with Titleist Brand Ambassador Jason Dufner.

A set of new Prototype CB irons awaits its owner in the TTV.

Titleist Brand Ambassador Nick Watney takes one of his first swings with the new Prototype AP2 irons on the range Tuesday at Aronimink.

Zooming in on the new Prototype AP2s.

Here's a shot of Nick's irons just as they were being taken out of the box.