Some rookies hit the 450SX class with a ton of hype. Everyone knew Ryan Dungey would make an impact as soon as he made the jump to the big class. Last year's rookie class was harder to gauge coming in, but they ended up performing extremely well, with Cole Seely winning a race, Jason Anderson nailing podiums, and Blake Baggett exceeding expectations. Dean Wilson missed races but showed his trademark glimpses of speed. So what happens now? Are these guys genuine threats for wins or even the title? Watch Jason Weigandt, Steve Matthes, Jason Thomas and David Pingree, along with a guest appearance from Davey Coombs, break down the second-year 450 gang in episode 4 of the Racer X preview for Monster Energy Supercross.

Watch episode 3: Where They At?