WR and CB have interesting depth this year. I'm interested in Perriman. Here's Kiper's 2nd tier after the big three:

Also in Round 1 mix Any of these guys could land in Round 1 and have a chance to help a team soon.

Devin Smith: He didn't measure as big as he plays, at 6-foot and under 200 pounds, but Smith is plenty fast (4.42) and has down-the-field credentials, where he flat dominated at the catch point last season. If you ran a reel for Smith's best catches, you'd assume he was 6-3.

Dorial Green-Beckham: Let's be clear here: Yes, DGB has the body type of Calvin Johnson, at 6-5 and 237 pounds. But let's remember Megatron ran a 4.35 with a 1.52 10-yard split at 6-5 and 239 pounds. Johnson also had a 42.5-inch vertical. DGB is plenty athletic, with a 4.49 40 time and a 33.5-inch vertical. But he also has off-field questions to answer. Still, the size and skill set (while raw) is tantalizing.

Breshad Perriman: We won't see Perriman run until his pro day, but at 6-2 and 212 pounds, on the tape you see a sure-handed receiver who morphs into a running back with the ball in his hands. He's been a favorite of mine who I feel is a first-round talent.

Phillip Dorsett: Having 4.33 speed can move you up on a lot of boards, but Dorsett isn't just a track star -- he's a capable receiver and can help a team out immediately. A star at the Senior Bowl, he's now clearly in the Round 1 mix.

Jaelen Strong: Another player who saw himself shrink in Indy, Strong measured under 6-3 after long being listed taller than that. Still, he's a force down the field and on contested balls, and the 4.44 speed is really good for a physical matchup threat who will play near 220 pounds.

Devin Funchess: He's 6-4 and 232 pounds and has been listed with the tight ends for a while, but Funchess is really just a size matchup wide receiver, and was used in that way by Michigan. He could land in Round 2 but is certainly going to be in the discussion for a few teams in Round 1. It just depends on how the board lines up.