It's been an action-packed few days for the Titleist Tour Van at AT&T National, where the new prototype Titleist 913 drivers were unveiled to the PGA Tour Monday morning.

All hands are on deck for the start to Titleist's seeding and tour validation process, as our Titleist Tour Reps and R&D experts work with players to show, explain, fit and test the new drivers.

Three of our experts – Chris McGinley, V.P. of Golf Club Marketing; Stephanie Bezilla, Director of Metalwood Development; and Chris Tuten, Director of Tour Promotions – checked in with Team Titleist earlier in the week to discuss the new prototype 913 drivers, the seeding and tour validation process and their goals for the week at Congressional.

Hear what they had to say in the above video.

The popularity of golf in Ireland has been underlined this week, as the Irish Open has become the first regular season event on the European Tour to completely sell out for all four days.

The world renowned Royal Portrush Golf Club, opened in 1888, is widely recognised as one of the finest links courses on the planet. At 7,143 yards and playing to a par of 72, the course will be a stiff test for the players - especially when you throw in forecasted rain and high winds!

And the passion for golf amongst the Irish fans was acutely illustrated when huge crowds lined the fairways from the start of the week, just to view the practice rounds.

Local favourites Rory McIlroy and Michael Hoey were big draws for the crowds and they are sure to enjoy raucous support during the event.

Rory had spent Monday with Titleist Tour Technician Mattias Jelver at his home testing the prototype Titleist 913 Drivers. According to Mattias' feedback, the results were very positive!!!

To see more of Rory with the Titleist 913 driver and more images from the range, simply click on the image below.

And this week we are at....

If you haven't heard, the tour seeding and performance validation process for the new prototype Titleist 913 drivers is now under way.

It began early yesterday morning on the range at the AT&T National with the sound of Titleist Brand Ambassador Bobby Gates hitting a new prototype Titleist 913 driver for the the first time, his Pro V1x golf ball launching far down the range at Congressional Country Club.

Several other Titleist players, including S.Y. Noh, Jimmy Walker and Brendan Steele, also took their first swings with the new prototype 913 drivers Monday, our Titleist Tour Reps there to help them get dialed-in with their optimal shaft and SureFit Tour hosel setting.

Meanwhile, Titleist Brand Ambassador Rory McIlroy took advantage of a nice day in Ireland to test his new prototype 913 driver with Titleist Tour Tech Mattias Jelver before getting ready to play in this week's Irish Open.

The buzz will get even louder Tuesday, as many more Titleist players arrive at Congressional, each with a new prototype 913 driver built to their specifications waiting for them in the Titleist Tour Van.

Take a look at Team Titleist's pictures from Monday's testing sessions in the slideshow below, and stay tuned for more pics, video and updates from Congressional.