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Artwork for The Quadrilateral

The Quadrilateral

Geoff Shackelford

A year-round newsletter from one of golf’s last independent voices devoted to all things Grand Slam and the best Cup events.

Platform
Substack
PricingFreemiumPublishesDaily
Issues966SubscribersRead quadrilateral.substack.com

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#29
Substack
/Sports(Free)
#18
Substack
/Sports(Paid)

Latest Issues

Recent posts by this newsletter. Browse the email archive.

Major(s) News & Notes, March 12, 2026

* Days to the Masters Honorary Starters Ceremony: 28

3 days ago
35
22

What Rolapp Should Be Focused On

The fifth major push will inevitably fade away. But Brian Rolapp's Wednesday's rollout will tell us much more about the future of the PGA Tour and the state of relationships with various partners.

5 days ago
50
30
Paid

Weekend: Bhatia Scrambles His Way To The API

Playoff win comes after a historic short game effort. Plus, Rory WD's with a back injury ahead of Players defense, Rahm ends winless drought, and remembering Jacky Cupit.

6 days ago
38
32
Paid

Reminder: Money Drives Europe's Ryder Cup Venue Choices

As Jon Rahm’s Ryder Cup situation festers and the European Tour Group tussles with one of their stars, Justin Thomas accidentally reminded the world what we’ve been deprived of in the name of…money.

9 days ago
40
19

Authors

The writers behind this newsletter.

  • Geoff Shackelford

    Author, writer, blogger, podcaster, golf architect, television analyst and now newsletter publisher!

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