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The Quadrilateral

About the Substack

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

Free Subscription Benefits

  • At least once-a-week public posts and extensive previews of all editions.

Paid Subcription Benefits

  • Subscriber-only posts and full archive access.
  • Post comments and join the community
  • Daily coverage before, during and after majors along with the best Cup events

Paid Subscription Plans

  • $59 a year
  • $7 a month

About Geoff Shackelford

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

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