FLORHAM PARK, N.J. -- The New York Jets have no practice on Monday, Day 5 of training camp -- a good time for an early stock watch:

RISERS

Jalin Marshall, wide receiver: An undrafted rookie usually doesn't create a buzz among veteran teammates this early in camp, but the former Ohio State player has people talking. They rave about his attentiveness in the classroom, how he's always asking smart questions. Quarterback Ryan Fitzpatrick praised Marshall for his football IQ, assuming he played quarterback at some point in his career. (He's right; he was a dual-threat quarterback in high school.) He makes a few plays every practice, including some with the starting offense. Let's not put him in Canton just yet (he actually grew up about three hours from Canton), but keep an eye on the silky-smooth wideout. In case you're wondering, he's not related to fellow receiver Brandon Marshall.

Jordan Jenkins, linebacker: If the rookie can take his practice-field performance to the games, the Jets might have something special. Jenkins, a third-round pick from Georgia, has put himself in a position to be an opening-day starter. He's getting most of the first-team reps with the base defense (mainly on the strong side), showing the versatility to rush out of a three-point stance in sub-package situations. The game doesn't appear too big for him.

Dee Milliner, cornerback: Milliner got beat a couple of times on Sunday, but the former No. 1 pick -- healthy for a change -- was solid in the first three practices. On Saturday, he made a nice, toe-tapping interception along the sideline on a deflected pass. He has talked candidly about hearing the "bust" whispers, and he appears more motivated than ever to fulfill his pre-draft promise. It's hard to believe, but he hasn't played a defensive snap in a game since October, 2014.

FALLERS

Bryce Petty, quarterback: He has thrown at least three interceptions in four practices, including a horrible throw on Sunday. Petty still is the No. 3, ahead of Christian Hackenberg on the depth chart, but that could change. Hackenberg throws a better ball than Petty, but he's inconsistent from down to down. That's what you expect from a rookie. Petty doesn't have that alibi. He needs a respectable showing to secure a roster spot.

Freddie Bishop, linebacker: He arrived with a fair amount of hype because he was one of the leading pass rushers in the CFL, but he hasn't made an immediate splash south of the border. The initial takeaway: Bishop plays with more power than speed, deriving much of it from his tree-trunk legs. Thing is, he won't be able to overpower NFL tackles the way he did in the CFL. Frankly, he looks more like a stout run defender than a pass rusher at this point.

Breno Giacomini, right tackle: Giacomini is sidelined with a back ailment, one that could keep him on the sideline for at least a couple of weeks. It behooves him to get back in a hurry because he didn't build much collateral with his performance last season. His absence has opened the door for the likes of Brent Qvale, Ben Ijalana and rookie Brandon Shell.