When Lance Armstrong lays down the law in the Tour de France, others riders sometimes have no choice but to obey. Just ask Filippo Simeoni. The Italian, who is involved in a legal battle with the five-time champion, tried to speed ahead of the pack Friday on the Tour's 18th stage. Armstrong's reaction was unequivocal: No way. Even though Simeoni is way down in the overall standings and cannot threaten Armstrong's march to a record sixth Tour victory, the Texan chased after him. Their animosity stems from Simeoni's testimony against sports doctor Michele Ferrari, with whom Armstrong has ties. Ferrari...