Editor’s note: This is an excerpt from a piece our Andrew Tursky originally wrote for PGATour.com’s Equipment Report. Head over there for the full article.

On Monday at the 2024 PGA Championship at Valhalla Golf Club, Block had a full set of TaylorMade “Proto” irons in the bag.

Block is the first player of many on the PGA TOUR to bag a set of the mysterious “Proto” irons. Rory McIlroy first switched into a “Proto” 4-iron at the Valero Texas Open, and Collin Morikawa followed suit at the 2024 RBC Heritage. Block isn’t using just the 4-iron, though, he’s using a full set to go along with a TaylorMade Stealth UDI driving iron.

Speaking with GolfWRX.com on Monday at the PGA Championship, Block revealed the full backstory.

“I hit a couple super “Proto” irons when I was at the Kingdom (TaylorMade’s fitting facility in Southern California) a couple months ago, and it was a 9-iron that didn’t have any badges or anything on it,” Block said. “I had no idea what it was … It was very similar to what I was using back then, you know, my old MCs, and very similar from the top. I hit it and absolutely loved it. For me to even think about switching irons from the last 11-12 years is crazy.

“I got this set about two weeks ago, and I’m working my way into them. I hit them more solid; it comes off the face more solid. Much higher. I think they’re still slightly too upright for me, so they’re being bent a degree flatter, because they’re going a little too high for me and drawing a little too much. When that starts to happen, I start to drop the club under and compensate too much, so I’m getting them flattened slightly, and I’m going to test them on the range again, and hopefully have them in play on Thursday…

“They go further, and they go higher … that combination is kind of a no-brainer. If I can take a 5-iron from 204 rather than a 4-iron, it’s good on me. It’s going to help me out for sure, especially at a major with the pin locations. Having that height coming in, that descent angle is going to be huge.”

With such new irons in the bag, after using the same irons for over a decade, surely you’d think there will be a bit of a learning curve. Block, however, is finding immediate comfort with the new “Proto” irons.

Head over to PGATour.com for the full article.

It’s hard to believe it’s been 10 years since Rory McIlroy outlasted Phil Mickelson at the 2014 PGA Championship. It’s even harder to believe McIlroy hasn’t hoisted a major trophy since his 2014 victory at Valhalla.

After a slow start to his final round, McIlroy tallied an eagle and two birdies on the back nine and his fourth major championship. Take a look at the clubs he played a decade ago in Kentucky.

Driver: Nike VR_S Covert 2.0 Tour (8.5 degrees) Buy here.
Shaft: Mitsubishi Kuro Kage XTS 70X

3-wood: Nike VR_S Covert 2.0 Tour (15 degrees) Buy here.
Shaft: Fujikura Rombax Pro 95 X

5-wood: Nike VR_S Covert 2.0 Tour (19 degrees) Buy here.
Shaft: Fujikura Rombax Pro 95 X

• Check out more in-hand photos of Rory McIlroy’s clubs from 2014 here.

Irons: Nike VR Pro Blade (4-9) Buy here.
Shaft: Project X 7.0

Wedges: Nike VR Forged (46, 52, 56, 60 degrees) Buy here.
Shafts: Project X 6.5

Putter: Nike Method 006 Buy here.

Grips: Golf Pride MCC

Ball: Nike RZN Black

Check out more in-hand photos of Rory McIlroy’s clubs from 2014 here.

WITB Time Machine is presented by 2nd Swing Golf. 2nd Swing has more than 100,000 new and pre-swung golf clubs available in six store locations and online. Check them out here.

• Tiger Woods WITB accurate as of the PGA Championship. In-hand photos from 2024 Genesis Open. Check out more photos of Tiger at Valhalla here.

Driver: TaylorMade Qi10 LS (10.5 degrees @9.75)
Shaft: Graphite Design Tour AD VF 6 X

3-wood: TaylorMade Qi10 Tour (15 degrees @13.5)
Shaft: Graphite Design Tour AD VF 7 X

5-wood: TaylorMade M3 (19 degrees @18.25)
Shaft: Mitsubishi Diamana D+ Limited 80 TX

• Check out more in-hand photos of Tiger Woods’ WITB in the forums.
• Check out more photos of Tiger at Valhalla here.

Irons: 2023 TaylorMade P770 (3), TaylorMade P7TW (4-PW)
Shafts: True Temper Dynamic Gold Tour Issue X100

Wedges: TaylorMade MG4 Raw (56-12TW, 60-TW11)
Shafts: True Temper Dynamic Gold Tour Issue S400

• Check out more in-hand photos of Tiger Woods’ WITB in the forums.
• Check out more photos of Tiger at Valhalla here.

Putter: Scotty Cameron Newport 2 GSS prototype
Grip: Ping PP58 Blackout

Ball: Bridgestone Tour B X (2024)

Grips: Golf Pride Tour Velvet Cord 58R

• Check out more in-hand photos of Tiger Woods’ WITB in the forums.
• Check out more photos of Tiger at Valhalla here.

More Tiger Woods WITBs

• Tiger Woods WITB 2024 (February)
• Tiger Woods WITB 2023 (November)
• Tiger Woods WITB 2023 (February)
• Tiger Woods WITB 2022 (December) (new in-hand photos)
• Tiger Woods WITB 2022 (July)
• Tiger Woods WITB at the 2022 PGA Championship (with a new 2-iron!)
• Tiger Woods WITB: 2022 Masters
• Tiger Woods WITB 2021 PNC Championship (new in-hand photos)