Titleist Brand Ambassador Ben Curtis arrives at the Aronimink range with his new Prototype AP1 irons.

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

Titleist Brand Ambassador Michael Sim checks in with the team at the Titleist Tour Van.

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

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

Here's the view from the top.

Many players are having their previous iron sets shipped home.

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

After a good range session, Nick put the new Prototype AP2 irons in the bag.

Geoff is also testing a new Prototype Titleist CB 2-iron.