More on that Rule 40 Twitter campaign by athletes:

U.S. sprinter Sanya Richards-Ross says prohibiting athletes from promoting personal sponsors is "unjust" and forces them to ignore the companies that supported them in their quest to make the sport's biggest stage.

She estimates it affects 98 percent of the U. S. athletes. But attention will now turn to competition. "I'm not forecasting more Twitter rants or a big uprising," she says.

— Jenna Fryer — Twitter http://twitter.com/jennafryer

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