Bradley playing with two Cleveland 4-irons

Ever played a round with two of the same clubs before? Keegan Bradley did en route to posting a course 10-under 60 at the Byron Nelson Championship last week. 

The 2011 PGA champion, who finished two shots behind eventual winner Sang-Moon Bae, bagged two Cleveland 4-irons - 588 MT and CG7. 

Bradley, however, has confirmed although the numbers were the same, they were slightly different when it came to yardage and ball flight.

The Cleveland 588 MT 4-iron has 21-degrees of loft and is a game-improvement long-iron that features a hollow head design that allows weight to be distributed for a lower, deeper centre of gravity.

Even though the MT irons are sold as a set, a number of Cleveland staffers have been replacing their long irons and hybrids with the MT this season, including the American, who used a 3-iron at the beginning of the season before switching to a 4-iron.

"It says 4 on the bottom of the club, but it's actually a 3-iron," said the three-time PGA Tour champion.

"The loft's a little stronger than my other 4-iron and I hit it as far if not farther than a 3-iron. It has a great flight and it's easy to hit."

Bradley's other 4-iron is a Cleveland CG7, which forms part of his current iron set. It has 25-degrees of loft and a smaller cavity back for better players.

"I've gotten some weird looks from guys on the course when they look in my bag and see two 4-irons," he added.

"I doubt there are a lot of guys out there that have two of the same iron in the bag, but it works for me."

Aside from his pair of 4-irons, Bradley also confirmed he's been working with a Cleveland 588 MT 2-iron that will likely go in the bag for US Open.

"I'm testing out some 2-irons [588 MT] for Merion just so I could maybe have one that's a bullet that I could hit. Not sure if I'm going to use it. We'll see what happen."