a href="http://www.nytimes.com/2009/07/29/sports/29xgames.html?partner=rssnytemc=rss"img src="http://graphics8.nytimes.com/images/2009/07/29/sports/29xgames.75.jpg" border="0" height="75" width="75" hspace="4" align="left"/aA winter sport has become a year-round pursuit, serious enough for an Olympic star to forgo skateboarding at the X Games. More...