NFL Network’s coverage of the NFL combine started Saturday morning (though the combine officially started Wednesday), and will run until Tuesday.

Up first? Offensive lineman, tight ends and special teams. Here’s a quick recap of the days top performances, per position group.

Offensive Lineman

Scouts are mostly looking for athleticism, footwork and arm length . NFL Network analysis Mike Mayock repeatedly admitted that this is a very good crop of talent and one of the deepest position groups in the draft.

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  Terron Armstead (Photo c/o USA Today Sports)
  

  Terron Armstead, OT, Arkansas – Pine Bluff: Armestead ran an impressive 4.71 40-yard dash, and is now  the fastest lineman to ever run at the combine. He was also the top performer in the bench press. Armstead, who comes from a small school, is sure to rise on draft boards with his performance on Saturday. He projects as a left tackle. (Watch Armestead’s 40 here).

• Lane Johnson, OT, Oklahoma:Johnson ran a 4.75 40, second to only Armstead, and the top 1.69 10-yd split (the 10-yard split is very important for an O lineman). Both numbers are extremely impressive for 6’6″ guy and demonstrate spectacular athleticism, though Johnson is a former QB, turned TE, turned DE that was moved to tackle.
• Chance Warmack, OG, Alabama: Warmack is considered to be the top guard in this year’s draft and one of the top players in draft class overall. His 5.5-40 was not overly impressive and consequently, has people freaking out and second guessing his athleticism, which may effect his draft stock. Warmack is a tremendous talent but
• Luke Joeckl, OT, Texas A&M: Joeckl did not run a particularly fast 40, but his overall performance at the combine was enough to maintain his position as one of the top tackles in the draft. He may not have the raw athleticism that many of the other top performers possess, but he is still a solid prospect.
• Jonathan Cooper, OG/Center, UNC: Another one of the top guards in the draft class, Cooper had a solid showing on Saturday with a great 40 time (5.07).
• Brian Schwenke, Center ,California: Schwenke followed up a great performance at the Senior Bowl with a solid showing at the combine, posting a 4.99 40-yard dash.

Tight Ends

The tight-end group is also very deep with big, fast and athletic prospects. Several of the day’s top performers could go as early as the first round.

• Tyler Eifert, TE, Notre Dame: Eifert solidified his status as the top tight end prospect with his performance at the combine, running a 4.68 40 and also recorded a 351/2-inch vertical jump and 22 reps in the bench press.
• Zach Ertz, TE, Stanford: Ertz, who is considered to be the next best TE prospect after Eifert, clocked a 4.75 40. He could also potentially go as early as the first-round in April’s draft.
• Chris Gragg, TE, Arkansas: Gragg had the best 40 and vertical jump in the group, clocking a 4.50 40-yard dash and 37 1/2″ jump.  Gragg is recovering from a leg injury that caused him to miss seven games last season, and his performance at the combine, which included a solid showing in positional drills, will improve his stock.