New Big Board: A clear top QB plus a new No. 1 overall in Robert Nkemdiche

Getty Images, AP Photo

Update: This has been updated based on the news UCLA junior Myles Jack is out for the year due to a knee injury.

After a dominant performance against Alabama this weekend, Robert Nkemdiche is the new No. 1 overall on the Big Board. It's not a huge leap, as he was in the mix going into the week, but you look for performances when NFL-caliber players actually face each other -- they can be more infrequent than you realize -- and Nkemdiche passed a big test on a big stage this week. He was the best player on the field in a game with plenty of good ones.

A reminder: General scouting reports on these players won't change much week to week, unless my overall evaluation changes. I'll simply be updating performance notes and providing updates on key matchups to come.

An asterisk denotes a junior for the 2015 season.

1. *Robert Nkemdiche, DT, Ole Miss Rebels

Now up to 6-foot-4 and 295 pounds, he still moves like a guy carrying about 40-50 pounds less. You saw it against Bama, when he was getting into the backfield constantly. Nkemdiche isn't just quick, though; he also has strength at the point and doesn't get eaten up by double-teams. If he stays healthy he'll end up in the top five.

2. *Joey Bosa, DE, Ohio State Buckeyes

Lining up all over, he's going to be used in multiple ways by the Buckeyes staff this year, and while maybe the numbers will be down a little, I don't expect the stock to fall based on what I see. Bosa has size -- he's 6-6, 275 pounds, and could play bigger -- versatility that will fit any scheme and the ability to go around blockers or right through them. He has been a machine when it comes to tackles for loss, and will continue to get his share.

3. *Jared Goff, QB, California Golden Bears

Goff is putting on a show so far this year, separating himself from critiques that say the system creates the QB at Cal. Goff has a hose when he wants to really cut it loose, is able to drill the ball down the field and into tight windows with ease, and he has effective movement skills and anticipation for a player with good length who seems to see the whole field. He can also move defenders with his eyes pretty well and will continue to get better.