The International Cycling Union has threatened cyclists with one-month bans if they compete alongside suspended riders, even in unsanctioned races. The ICU has acted after American Tyler Hamilton was photographed racing in the Stazio Criterium Series in Colorado.
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http://us.rd.yahoo.com/dailynews/rss/search/cycling+racing/SIG=11f4e2jsk/*http%3A//www.totalbike.com/view_news/5065.htm