Marc plays a mixed set of Titleist AP2 and MB irons.

The moment just after impact...

Another box of new Titleist prototype irons, ready for pickup in the Titleist Tour Van.

Adam Scott's new prototype MB irons get the custom-stamping treatment.

Adam plays Titleist MB 3-9 irons with KBS Tour shafts.

Here's a closer look.

This new Prototype MB iron belongs too... (Note the custom-stamped "C") ... Titleist Brand Ambassador Charley Hoffman.

And here's another look at the new prototype Titleist AP1 and AP2 irons.

The Titleist Tour Van has pulled out of Aronimink, but stay tuned tomorrow for more updates.