According to NFL draft expert Mel Kiper, Jr., Associate Justice John Paul Stevens' announcement last week that he would be retiring from the U.S. Supreme Court altered Kiper's Big Board considerably. 'This certainly complicates things. If, for example, Obama selects 9th Circuit Court of Appeals judge Sidney Thomas, there's a good chance Jacksonville will take Sergio Kindle out of Texas instead of C.J. Spiller,' Kiper said during Tuesday's edition of SportsCenter. 'Now, if Obama goes with a jurist whose confirmation could be a long, drawn out process, like an Elizabeth Warren, the 49ers will definitely have to trade down for more picks.' Kiper added any chance of Tim Tebow being drafted in the first round was basically quashed when Obama ruled out Secretary of State Hillary Clinton for the justiceship. 