Combine: Robinson a No. 1 level talent

The athletic testing portion of the NFL scouting combine began on Saturday, with offensive linemen and tight ends running through a series of drills.

Which players stood out, and what were the major story lines of the day? Let’s look at our five biggest takeaways from a day that showcased a deep, impressive class of offensive linemen and a generally underwhelming class of tight ends. We'll start with a potential top-five pick who stood out with his performance.

1. Auburn’s Greg Robinson has the talent of a No. 1 overall pick

Here’s an important qualifier for what comes next: From everything we’re hearing, it isn’t likely that Robinson would be the Texans’ choice with the No. 1 overall selection. At this point, we’d project South Carolina DE Jadeveon Clowney and our three top-ranked QBs (Louisville’s Teddy Bridgewater, UCF’s Blake Bortles and Texas A&M’s Johnny Manziel) as likelier candidates to go to Houston. So this is not about making the argument that Robinson could be the top pick, and Clowney is still the top prospect on our board. Robinson still has some developing to do, and he isn't a perfect prospect.

But Robinson is an elite talent with rare natural ability who would merit consideration for the No. 1 overall pick in some years (not saying he doesn’t this year, just that he isn’t likely to be), and we think he’s a better prospect than any of the three offensive tackles who went in the top four picks in the 2013 draft. He provided a glimpse of why on Saturday with his performance in the drills.