Titleist Brand Ambassador Bill Haas takes his first swings with the new Prototype CB irons.

Titleist Brand Ambassador Johnson Wagner poses for a picture with his new Prototype CB irons.

Time for more testing... Check back soon for more updates, photos and video from Aronimink!

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.

Rick Nelson, Titleist's director of wedge development, completed the delivery.

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

Geoff put his new prototype irons right in the bag.

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