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The Quadrilateral

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

Newsletter · By Geoff Shackelford · English · Paid tier available · Official site

Indexed issues, last 90 days
15
Latest publication
Sep 28, 2026
Audience
Checking…
Earliest in this view
Aug 31, 2026

Latest issues

  1. Issue · Sep 28, 2026

    Lessons From The Presidents Cup (opens the original)

    Excerpt · Neutral tone

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    <img alt="" class="sizing-normal" height="340.48" src="https://substackcdn.com/image/fetch/$s_!cYkr!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fd2994ac3-c3a5-42a6-93fb-749424566059_1000x532.

  2. Issue · Sep 24, 2026

    Major(s) News & Notes, September 24th, 2026 (opens the original)

    Excerpt

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    <img alt="" class="sizing-normal" height="301" src="https://substackcdn.com/image/fetch/$s_!Tjcc!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F2e0c69e5-1848-4b70-8aba-7404a8ebdee0_957x301.png" t

  3. Issue · Sep 22, 2026

    Is Bifurcation Back In A Big Way? (opens the original)

    Excerpt

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    <img alt="" class="sizing-normal" height="748" src="https://substackcdn.com/image/fetch/$s_!6Sx7!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F0176d328-e91e-46ea-8ff3-0c1a954ca0ac_1000x748.jpe

  4. Issue · Sep 21, 2026

    J.J. Spaun Wins The BMW PGA (opens the original)

    Excerpt · Neutral tone

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    <img alt="" class="sizing-normal" height="532.5075" src="https://substackcdn.com/image/fetch/$s_!OXrH!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F2f3da862-fab1-49a5-a0bd-4a60649fd43f_800x621.

  5. Issue · Sep 17, 2026

    Major(s) News & Notes, September 17, 2026 (opens the original)

    Excerpt · Neutral tone

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    <img alt="" class="sizing-normal" height="458.388" src="https://substackcdn.com/image/fetch/$s_!ZFhY!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F12df11c8-6f14-4055-9f9a-6dddbcc1fdb1_1000x714

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