Todd McShay's updated Top 32: Ranking 2018 NFL draft prospects

McShay says Allen is physically talented (2:38)

Todd McShay explains why Wyoming QB Josh Allen is one of the most physically talented quarterbacks in terms of frame, mobility and arm strength and explains concerns he has about Allen heading into the NFL draft. (2:38)

The deadline for underclassmen to declare has come and gone, and we'll get a look at some of the top talent at this week's Senior Bowl in Mobile, Alabama, which means it's a good time to reset the prospect picture.

Here are my updated top 32 prospects for the 2018 NFL draft right now, plus my top 10 prospects at each position.

Note: Underclassmen marked with asterisks.

1. Saquon Barkley, RB, Penn State*

Grade: 95 | Previous rank: 2

Barkley was the best running back in the nation this season, racking up more than 1,200 yards on 5.9 yards per carry and 18 TDs despite regularly facing eight and nine men in the box. Barkley has a distinctive combination of size, agility and power. There just aren't many 230-plus pound backs with his feet and acceleration. Barkley is also a three-down back with solid hands as a receiver and above-average blocking skills in pass protection. Making it an even easier evaluation is the fact that Barkley is a driven competitor with very good leadership skills and no off-the-field issues. This guy is clean and complete as they come.

2. Sam Darnold, QB, USC*

Grade: 94 | Previous rank: 3

There's no doubt that Darnold made some questionable decisions throwing the football this season (13 INTs) and picked up some bad habits behind a shaky offensive line (specifically erratic pocket poise and loose handling of the football). But when his base and feet are right, Darnold can be a very accurate passer. His ability to extend and improvise is an important trait, and there's a lot to like about his intangibles and leadership skills. Josh Rosen is more polished as a pocket passer, but I think Darnold's ceiling is higher.