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Try Harder? What a DEF CON Challenge Teaches Us About Resilience Is Generative AI Killing the Capture the Flag Competition? When AI Gets It Wrong: A Lesson in Human Judgment from DEF CON 34 Serving First: Charlie Pasarell and a Life of Service to Tennis The Code, Principle 13: Should You Call Your Own Shots Out? Can Soccer Toe Taps Improve Tennis Footwork Tennis Beyond the Headlines: August 10, 2026

Nothing is as Important as it Seems

I am suddenly and unexpectedly spending a lot of time in the house of the Umpire Who Gave Birth to me. She took a tumble shortly before Thanksgiving and has been in the hospital until yesterday. There is a whole lot more to the story. The trivial side effect of that development relevant to this blog is that I am finding all sorts of tennis artifacts in her house. In fact, I am probably going to be writing a lot in the future about some of these found objects.

Making a List: Coaching in Tennis

Perhaps it is a sign of the season. As I write this final installment on the “Coaching” section of the ITF Rules of Tennis published in the USTA Friend at Court, I have a Christmas carol stuck in my head. More specifically it is the lyric “He’s making a list, and checking it twice…” from Santa Claus is Coming to Town.