Of the different sports out there, the one with the largest variation in playing conditions might be tennis. There’s grass, clay, that weird concrete stuff down at the local courts… okay, that’s all I could think of, and maybe my initial premise is way off. But whatever, we’re plunging ahead with this one.
Less well-known, though, is the variation in tennis balls from court to court. As Andy Roddick noted at his latest victory, the different hosts of the hardcourt series (yes, that’s it! Hardcourt! Replace “weird concrete stuff” with “hardcourt” above, please.) have been using different brands of tennis balls for their tournaments, and he has just about had enough of it, mister.