Preseason is a chance for players to make an impression. Everyone is hoping for positive takeaways when they look back at their game tape, but some New Orleans Saints can't afford to make many mistakes against the Arizona Cardinals on Saturday.

Whether it's because training camp competitions are heating up or their own disappointments to this stage in their career, this is shaping up to be a pivotal moment for many guys on the roster. The game is scheduled for 7 p.m. CT from State Farm Stadium, and it'll be broadcast locally on FOX affiliates in and around Louisiana. Here are six players with the most to lose at kickoff in Arizona:

RT Trevor Penning

What's the move if Penning struggles at right tackle? If he's unplayable there after bombing at left tackle? Both Penning and his coaches have voiced confidence after the move, but we need to see it to believe it. It's risky because the Saints don't have a viable replacement on the roster. If he struggles, they'll be forced to start someone like Olisaemeka Udoh at that spot, and he hasn't been able to hold down a starting gig of his own. There's a ton of pressure on Penning here. He and the Saints can't afford for this transition to be a letdown.

DE Payton Turner

It isn't exactly now-or-never for Turner just yet, but things are trending that way. The Saints declined his fifth-year option this summer. He had to miss a day of practice early this week resting his surgically-repaired foot. He's made some great plays and had some sacks in team drills but it's continued to be Chase Young and Carl Granderson stealing the show. Turner's roster spot could be in jeopardy if he isn't beating up on backup offensive tackles this week. Isaiah Foskey won't be waived as a second-round pick drafted a year ago, but the Saints could choose to move on from a former first rounder who has only played 15 games in three years if he still isn't showing them enough.

K Blake Grupe

Grupe is ahead in the kicking competition -- for now. He's been much more effective on kickoffs and he's tried almost a dozen more field goals than Charlie Smyth has through training camp. But Smyth has kept it close, and the rookie from Northern Ireland has a big leg. If Grupe falters when the coaches send him into the game, either from great distance (he missed a 60 yarder last summer and has a long of 55 yards) or on chip shots (where he botched it twice last season), it could mean trouble.

WR A.T. Perry

This hasn't been the summer we hoped for from Perry. The second-year wideout has dropped too many passes and had too many quiet days at training camp, and here's his chance to help his coaches overlook all that. He proved to be a gamer last year. And he'll have every opportunity to help himself in Arizona with so few wide receivers healthy before kickoff. Perry needs to prove he's head-and-shoulders better than his competition, not just taller than them.

P Lou Hedley

Hedley has been more consistent than Matthew Hayball, the other punter at Saints training camp, but this is where he needs to separate himself from his competition. Showing improved hangtime and accuracy with his placement will do a lot to build confidence in the second-year pro. He struggled to buy much time for his coverage team last season and it's vital that he give them a wider margin for error. A couple of mistakes -- short kicks or quick-falling punts -- could be disastrous.

OL Landon Young

Young started camp as the backup left tackle behind Taliese Fuaga while splitting reps on the right side after Trevor Penning, but he's lost ground on some other linemen. The competition for those final two or three roster spots is picking up. Guys like Olisaemeka Udoh and Kyle Hergel have done more to help their case this summer than Young. Dominating his opponents whenever the second- or third-string offensive line checks in would do a lot to help his case.

This article originally appeared on Saints Wire: 6 Saints with the most to lose vs. Cardinals