An early top 20 list of Kentucky Derby contenders compiled by Mike Watchmaker, Daily Racing Form's national handicapper. The 2011 Kentucky Derby will be run May 7 at Churchill Downs. KENTUCKY DERBY 137 * New signposts along road to Kentucky Derby * 2011 Kentucky Derby contenders ranked by graded earnings * Watch DRF.com's Kentucky Derby section for news from the trail * Follow @DRFDerby on Twitter for updates