The new prototype 913 drivers, side by side. That's the 913D2 on the left and the 913D3 on the right. Make sure to check back in the coming days for more photos, details and initial player reaction to the new prototype 913D2 and 913D3 drivers!

Brendan takes a lash with his new prototype 913D3.

Titleist Brand Ambassador Brendan Steele, deep in discussion with Titleist Tour Reps Scott Cuppett (left) and Larry Bobka.

A good look at the toe and crown of the prototype 913D3.  If you compare this photo to the same shot of the prototype 913D2, you'll notice that the back edge of the 913D3 is a little deeper.

This is how a teed-up Pro V1 or Pro V1x will view the prototype 913D3.

A view of the prototype 913D3 in the play position.

The sole of the prototype 913D3 driver.

Stephanie Bezilla, Titleist's Director of Metalwood Product Development, is on hand this week at Congressional to lend support during seeding and provide product details on the new 913 prototypes. Here, she answers a question posed by Titleist Brand Ambassador…

A closer look at the prototype 913D2 toe.

The faces of both the new 913D2 (seen here) and the 913D3 prototypes features some unique changes to the graphics.