Titleist Tour Rep Scott Cuppett brings a set of new Prototype MB irons out to the range.

Greg's new Prototype CB's were the only left-handed set on the range Monday.

And here's a right-handed set of the new Prototype CB irons being worked on in the Titleist Tour Van.

A few of the new Prototype Titleist irons rest comfortably on the floor of the TTV, awaiting new grips.

The custom Cowboy Orange-paintfill and "R" stamping should give it away…

Rickie hit the range late Monday afternoon to test out the new clubs for the first time.

One more shot from ground level.

Stay tuned to the Titleist Tour Blog for more pictures and updates from Aronimink!

Titleist Brand Ambassador Greg Chalmers hits his new Prototype CB irons for the first time.

Can you guess the owner of these new Prototype MB irons?