Welcome to the home of Noah Brier. I'm the co-founder of Variance and general internet tinkerer. Most of my writing these days is happening over at Why is this interesting?, a daily email full of interesting stuff. This site has been around since 2004. Feel free to get in touch. Good places to get started are my Framework of the Day posts or my favorite books and podcasts. Get in touch.

You can subscribe to this site via RSS (the humanity!) or .

Tennis Ball Economics

Man do economists love raining on people’s parades. Apparently tennis players (like John McEnroe) believe that getting new balls (which apparently happens every nine games) is an advantage. After running the data, the results aren’t exactly in line with players’ thinking:

According to Wimbledon data analyzed by a pair of economists with a fondness for tennis arcana, first serve points are no more likely with new tennis balls than old ones. If anything, double-faults are more likely, implying it may be better to serve using older balls than newer ones. Take that Big Mac.

Point: Math.

June 14, 2009