Below is our final set of pictures from this week's debut of the new Prototype Titleist AP1, AP2, CB and MB (712 series) irons at the PGA Tour's AT&T National.

In the coming days, we will be posting more updates from Aronimink Golf Club, including player reactions and interviews with our Titleist Golf Club R&D experts.

Over the next several weeks, the seeding and tour validation process will continue across the worldwide professional tours. Our Titleist Brand Ambassadors on the European Tour will begin testing the new prototype irons next week at the Barclays Scottish Open.

As always, stay tuned to Team Titleist for all the latest information and behind-the-scenes updates.

If you missed the first two slideshow, you can find them here: Part 1Part 2.