It's actually pretty big. St. Louis was in talks with Baltimore to trade up and select Zach Martin at 17. You have to assume they would have the same discussions if Baltimore were picking 16th. If Martin goes off the board, then Dallas' short board of Barr/Donald/Shazier/Martin is thrown out, and they probably take Johnny Manziel. So, basically, the coin flip *could* be the difference between the Cowboys drafting Martin and Manziel. So it goes.