Graeme McDowell may have signed a new endorsement deal with Srixon, but a few of his old clubs made their way into his new bag. Via Twitter on Wednesday he listed the equipment he plans to use this week at Kapalua.

The driver he refers to in that last message, specifically, is a Callaway FT Tour (8.5°) with an Aldila RIP 60 shaft. The hybrids are Adams Idea Pro (17°, 21°). The 17° has an Aldila NVS 85 shaft, and the 21° has an Aldila VooDoo XVS8 shaft. His putter is from the Odyssey White Hot line.

I spoke with a representative from Cleveland/Srixon via e-mail on Wednesday. The company was aware that the 2010 U.S. Open champ might keep using some of his Callaway and Adams clubs for a while. According to the source, McDowell has been testing Cleveland's Launcher UltraLite TL 310 driver, so look for that club to possibly become his new gamer in the weeks ahead.

See-Try-Buy: Learn more about Cleveland, Callaway/Odyssey and Srixon clubs, and schedule your fitting with GolfTEC.

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Before the start of U.S. Open at Bethpage, many players put hybrid clubs in their bags and pulled out long irons. With several long par 4s and wet conditions to contend with, they were looking for a way to hit high-flying, soft-landing shots from 220 to 230 yards out.

Now, as the best players in the world get ready to take on Turnberry's Ailsa Course in Scotland in the British Open, those long irons may be going back in the bag.

On Tuesday, Paul Casey said on Twitter:
"Thinking the 5 wood will be coming out and the 2 iron will be making a guest appearance for the Open. No other changes."

I asked him which model and he wrote back, "Still the Nike Pro Combo OS. I have 2 or 3 of them that I'm hanging on to."

Turnberry is located on the western coast of Scotland, so players can expect windy conditions. Since hybrids are designed to hit the ball high, irons would seem to be a better choice.

Here is a list of the clubs that Casey used to win the blustery 2009 Shell Houston Open:

Driver: Nike SQ Tour (8.5°) with a Mitsubishi Diamana Blue Board shaft
Fairway woods: Nike SQ II (13°)
Irons: Nike Pro Combo OS (2), Victory Red Forged Split Cavity (3, 4), Victory Red Forged Blades (5-PW)
Wedges: Nike Victory Red (52°, 59°)
Putter: Nike Prototype
Ball: Nike One Tour

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Here is an interesting steam of Tweets from Ian Poulter's Twitter page:

Ianjamespoulter i tested the new grooves with vokey in feb. what a difference no spinnnnnn. the usga are insane to make us change so quickly.

Ianjamespoulter i guess they were all bored sitting around that table drinking coffee and smoking cigars... get a life let us have fun on the course.

Ianjamespoulter it will cost the manufacturers millions to develop and distribute to all the stores global, so you AMs can get them before open qualifying.

Ianjamespoulter Our irons already comply, but wedges need to change for start of the year. all the best... thanks R&A and USGA softer balls here we come.

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Last night I asked a question on Twitter to the people who follow GOLFcom_TheShop:

Does anyone think that equipment news/features could enhance TV coverage of golf events?

Ken wrote: no!!

puttistry wrote: ABSOLUTELY. List equipment/balls next to the golfer...like what NASCAR does with car model.

Scott wrote: yes, i study equipment in telecast.  what are players using is it old/new.  and the launch conditions.

What is your opinion. Would broadcasts on The Golf Channel, CBS, ABC and ESPN be enhanced by more coverage and features on the equipment used by the pros?

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Stewart Cink was recently in Ft. Worth, Texas, experimenting with new equipment at "The Oven," Nike Golf's research and development center.

After taking an overnight flight back to his home in Atlanta Thursday night, Cink partook of his favorite new hobby, Twittering (photo).

He wrote, "New grooves next year mean 10% less spin from fairway and 60-70% less from rough with short irons. Players will use softer balls I believe." Moments later he wrote,  "IMHO [In My Humble Opinion] the new grooves are really an indirect way to attack driving distance since softer balls go shorter in general."

Players have openly wondered how the new groove rules, which will go into effect in January, will affect performance. Several I have talked with—including Geoff Ogilvy and Tremor Immelman—have echoed Cink's thoughts.

Cink's comments are important for a few reasons. First, they show that some players are taking steps now to learn what they will have to do in order to get the most benefit from their equipment after the new rules go into effect. Second, if Cink's estimations are correct, the days of bomb-and-gouge golf may be coming to an end. If players can't control the ball as well coming out of the rough, driving accuracy once again will become a meaningful stat for players at the highest levels of the game.

When I spoke recently with Cink about his equipment, he said, "I'm already on the low end of the spectrum when it comes to optimal spin, so if I fall below the spectrum, I'm going to have to do something in order to get the spin back up. The easiest thing to do is change your ball."

Cink had been playing the Nike One Black ball, but switched this season to the Nike One Tour D ball. He said that he got the spin he was looking for from the new ball, and launch conditions with his driver were good too, but his irons shots flew higher and didn't go as far as they had previously.

He said that this season he wanted to use a ball with more spin, and thus "hit the ground running when the new grooves come out."

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(Photo by Scott Halleran/Getty Images)

A few weeks ago, in one of my first Twitter posts, I tweeted that Scotty Cameron and another high-ranking Titleist employee told me a new family of putters was going to be released this summer. They would not show me anything or give away any details, but I learned that the putters would have a new, amber-colored finished.

Say hello to the 'Honey Dipped' putters.

Marc Turnesa is currently testing this Studio Select Fastback putter.  Notice that the putter on the top is labeled 'For Tour Use Only - Xperimental Prototype.'

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 (Photos by Megan Morgan/Titleist)

Today was media day at Bethpage State Park, home of the Black Course, where the U.S. Open will be played June 18-21. My clubs were in my car, and I was itching for a chance to challenge a course that's so tough that it comes with a warning sign. Instead, we got rained out.

The day was not a total loss, however. After various USGA and government officials spoke, Tiger Woods took questions via conference call. I asked about his driver testing:

You've been experimenting with some different driver shafts. Can you explain where you are in the process of trying to find the right mix for your driver and how important that's going to be as you start your preparation coming here to Bethpage?

"I think I'm going to stick with the same shaft, my old shaft [Mitsubishi Diamana White Board]. The other shaft [an Oban Mach 4 prototype] did not quite work out for me. Wasn't what I was looking for. Felt good in the practice round, but in the tournament, I didn't quite have the same feel for it, so went back to my old driver on the weekend. Hit the ball nice; I wouldn't say great, but I hit it a little bit better. But still, this driver has done pretty well, and that's the one I'll continue working with and hopefully get my swing organized."

As I wrote earlier on Twitter, it sounds like Tiger's shaft experimentation may be over for now. Still, I'll be sure to report on what he's swinging this week at TPC Sawgrass.

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Morgan Pressel has been an avid user of Twitter for a while. As I type this, she has more than 1,100 followers. She uses the site to share news about her love for the Detroit Red Wings, her rounds and practice sessions, and her shopping habits.

Yesterday she Tweeted about putting a new driver into her bag at the LPGA's Corona Championship in Morella, Mexico.

"Put a new Callaway FT-9 into play today for the 1st time and didn't miss a tee shot. It has a great trajectory. This one has staying power!"

Pressel had been previously been using a Callaway FT-5.

Moments later, the 20-year-old wrote, "MF [Meaghan Francella] said 'Wow you really like that driver huh?' when I outdrove her a few times today...I also tried to tell her to join Twitter!"

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(Photo by Donald Miralle/Getty Images)