In 2010, the infamous Jabulani balls for the World Cup in South Africa transitioned from turbulent to laminar flow between 50 and 45 miles per hour, right at the speed for corner and free kicks. The transition between these different types of flow causes even more drag on the ball, which caused the Jabulani to wobble in the air and drop in ways that players weren’t expecting.
While this ball is absolutely adorable and feels like it's a good quality, I'm disappointed with the one I received. It has little chips in the design—there are a few little white marks in the sections that are orange. Also, there is some sort of sticky stuff on the ball, almost like residue from an old sticker. I can probably remove it with Goo-Gone... I'm just not thrilled that it seems to be used or at least bought and returned. While I'm sure my nephew will love it for his 1st birthday party tomorrow, I'm mildly embarrassed to give it to my brother and his wife because of the appearance. If the party weren't tomorrow, I'd return / exchange it. Frustrating!
Every four years there’s a new ball for the World Cup—and every four years players are unhappy with it. Maybe it’s too light and has too much lift, like the 2002 Fevernova. Or maybe it wobbles unexpectedly in the air, making it harder for goalies to predict its motion, like the 2006 Teamgist. Or maybe the ball suddenly changes speed, dropping out of the air and causing accidental handballs, like the 2010 Jabulani.