Reuters - Tiki Barber, the New York Giants' all-time leading rusher, took the first step toward returning to the NFL on Tuesday and ending a four-year retirement.<p><strong>Read more:</strong> <a class="rssreadon" rel="external" title="Barber takes steps to end retirement and return to NFL   (Reuters)" href="http://us.rd.yahoo.com/dailynews/rss/sports/*http%3A//news.yahoo.com/s/nm/20110308/sp_nm/us_nfl_barber" target="_blank">http://us.rd.yahoo.com/dailynews/rss/sports/*http%3A//news.yahoo.com/s/nm/20110308/sp_nm/us_nfl_barber</a></p>