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The Quadrilateral

Geoff Shackelford
Thousands of paid subscribers

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
PricingOnly paid issuesPublishesDaily
Issues1006Founded6 years agoLast Issue6 days ago
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Latest Issues

Wednesday At The 108th PGA Championship

Philly shows up as Aronimink dials in. Plus, Young's shock ball reveal is a rollback blow, final odds, the new PGA CEO speaks, On Course, Weather, and the viewing schedule.

About those Wednesday gusts to 34 m.p.h. mentioned in the 108th PG...

6 days ago
40
22
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Tuesday At The 108th PGA Championship

McIlroy previews an aggressive approach to Aronimink but cuts his practice short due to a lingering toe injury. Plus, Tee Times released, On Course at key back nine holes, Quotable, and Weather.

Aside from a tiny toenail and one more forec...

7 days ago
55
22
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Monday At The 108th PGA Championship

Aronimink looks superb, even with its par 3s are stretched too far. Plus, other first impressions, answering key setup questions, Quotables, the early resale market dip, and latest forecast.

Gray skies and cool temps did little to deter pl...

8 days ago
56
27
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Weekend: Snedeker Plays Into The PGA

Reitan wins at Quail Hollow. Plus, a 14-stroke winner in Europe, a twist in CBS and ESPN's PGA plans, pros distance point-missing, NLT settles with Trump, and PGA Weather forecast improving.

The weekend revealed plenty about the state of v...

9 days ago
46
27
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Major(s) News & Notes, May 8, 2026

Pros point-missing reaches fever pitch. Plus, PGA field surprises, Rory resurfaces, Rahm settles with Europe, Royal & Ancient's first woman Captain, Tickets, Quotable, This, That, and Reads.

Days to the PGA Championship first round: 6

12 days ago
52
42
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Authors

The writers behind this newsletter.

  • Geoff Shackelford

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

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