What's In My Bag: Shane Lowry\nAge: 29 | Lives: Clara, Ireland | Story: Won 2015 WGC-Bridgestone Invitational. Runner-up at 2016 U.S. Open.\nIt’s hard to believe it’s been seven years since I won the Irish Open as an amateur. It was a dream come true for sure and a real life-changer. The two-year exemption let me figure out what it takes to play against the best golfers in the world.\nI prefer tough courses like at the U.S. Open. It’s where I feel most comfortable. I like when you shoot one under par and feel like that was a really good score.\nSpecs: TaylorMade M2, 9.5˚, 45 inches, Aldila Rogue 65X shaft,\nD-3 swingweight. A recent addition. I had a driver for six years, but this just busts it out there. It’s also forgiving, so I feel like I can really go after it.\nSpecs: Callaway Big Bertha V Series, 15˚, 43 inches, Aldila RIP 80X shaft, D-3 swingweight.\nSpecs: Srixon Z-TX, 18˚, 41.5 inches, Aldila RIP 80X shaft, D-3 swingweight. Both fairway woods have been in my bag for years. A good fairway wood is the hardest thing to find. My 5-wood is a strong club that I can easily pitch 240 yards.\nSpecs: Srixon Z 545, 3- through 5-irons; Srixon Z 745, 6- through 9-irons, KBS Tour 130X shafts, D-4 swingweight, Golf Pride Tour Velvet 58R upside down grips. I adopted this split set at the start of 2015. It delivers a consistency and forgiveness I’ve never had.\nSpecs: Cleveland RTX-3, (47˚, 51˚, 58˚), KBS Tour Custom shafts. I put these in the bag after just one day of practice at the WGC-Bridgestone. I did nothing with the grinds. They were perfect right off the truck.\nSpecs: Odyssey White Ice 2-Ball Blade, 3.5˚, 35 inches, 71˚ lie angle. I picked up this putter in Abu Dhabi in 2010. It’s been in and out of the bag, but it’s here to stay for a while. All of my best finishes have come with it.\nI don’t carry a yardage book. I trust my caddie on yardages. He gets it wrong only a couple times per round.\nI’m a patriotic guy, so I mark my Srixon Z-Star XV with a shamrock. I go through five a round but only because I toss them to kids.\nThis ball marker means a lot to me. I wanted to make sure I didn’t lose it, so I use this ring case to keep it from getting lost inside my bag.