“One of the oldest unwritten rules in the Tour de France: Do not benefit from a rival’s puncture, crash or breakdown to take the overall lead. Which explains why the cycling world is already abuzz about Alberto Contador’s decision to pass Andy Schleck on a climb in Monday’s stage while Mr. Schleck fixed his chain. The Spaniard gained 39 seconds on his rival, enough to grab the yellow jersey with only four stages left.” It’s soooo on. [WSJ; video of fight from earlier in the suddenly drama-fight Tour]