The opening day of the NFL Scouting Combine is usually more looked forward to just so that we can say that the combine has begun more than for the players who participate in it. Minnesota Vikings fans might want to keep their eyes open on the first day though, a favorite player may be in the starting group. Day one of the combine will feature the first three groups of players arriving at Indianapolis, but no actual drills will be done until day four as the first gang of players go through orientations, medical exams, interviews and the like for the first few days. The first three groups will consist of the special teams players, offensive lineman and tight ends. There's not too many huge names in the group, as should probably be expected with those positions. Minnesota Vikings fans should definitely keep an eye on Matt Kalil of the tackle group though, as he is probably the most frequently mock drafted player to the Vikings at present with their third overall selection. Day two of the combine will provide the intriguing offensive skill players when the quarterbacks, running backs and wide receivers arrive. Day three will provide most of the defensive players, and the defensive backs will show on day four. Every player at the combine can be found on the official Invite List here. For more information and updates on the 2012 NFL Scouting Combine, check SB Nation's NFL draft blog, Mocking The Draft. For more on the NFL in general, you can head to the SB Nation NFL hub at sbnation.com/NFL.