Auburn’s top three players on the 2015 offense are pretty much set.

Quarterback Jeremy Johnson is the leader, no question.

Wide receiver D’haquille Williams is the top playmaker, despite a week-long suspension and then an ankle injury that forced him to leave Saturday’s practice.

While the running back position hasn’t been completely settled — Roc Thomas and Peyton Barber appear to be the favorites — it’s a safe bet that whomever earns that job will be a major offensive weapon, rounding out the top three.

We’re assuming here that Auburn will settle on a true lead back, as it did in 2013 (Tre Mason) and 2014 (Cameron Artis-Payne). If not, the second option of a backfield time share becomes the No. 4 overall option on offense.

Behind those big three (Johnson, Williams, Thomas/Barber), who can we say is Auburn’s fourth lead guy on offense?

With Johnson expected to pass more often than former QB Nick Marshall, and with Sammie Coates and Quan Bray gone, identifying the best receivers beyond Williams is very important. In this regard, Williams missing a whole week of preseason practice may have given Auburn’s coaches an advantage. They were able to focus more time and energy on the capabilities of the other receivers.

From his offseason work, senior Ricardo Louis is proving he may be the fourth-best option. Last year, Louis had 21 receptions for 261 yards and 3 touchdowns. He is first on the team in career catches (52) and second in yards (622).

“He’s off to a great start and really starting to establish himself as one of our offensive leaders. That’s what we asked him to do,” said Gus Malzahn of Louis during camp, according to AL.com. “He’s in a good spot. He’s just got to get out there and do it.”

According to AuburnUndercover, offensive coordinator Rhett Lashlee echoed Malzahn’s sentiments this past Wednesday: “As long as Ricardo continues to bring the approach he’s bringing to practice right now, I feel very good about Ricardo. I know Jeremy is gaining confidence in him.”

Saturday’s scrimmage showed that with clarity. In Auburn’s second scrimmage of preseason camp, the offense came alive. Johnson had to chance to throw more than 20 times, including a deep touchdown pass to Louis.

Across the board, confidence in Louis is soaring based on his current performance. What does the receiver himself think about his last season as a Tiger?

“I already know it’s time to step up and that’s what I’m going to do,” he said, according to AL.com. “Wherever they put me I’m going to try my best to make a play and help us win a championship.”

Several other receivers are vying for targets and playing time, but Melvin Ray is the most notable as of now. He and Louis likely represent the second- and third-leading receivers, in some order.

If there’s a wild card in this group, it’s Jovon Robinson. The JUCO transfer came to Auburn as a touted running back that many anticipated could be next in line behind Mason and Artis-Payne. Instead, it’s taken him time to adapt to the offense.

Right now Robinson is third at best if Auburn were to release a depth chart at running back. But he likely remains the team’s best pass-blocker, as the Tigers coaching staff described him this spring. And the team will continue to try to develop him. If things click, he could become a third or fourth option on offense at some point this season.

Still, as of today, Louis is the most likely Auburn player beyond Williams and the starting running back to find himself on the short list when Malzahn and Lashlee start dialing up plays.

SDS Editor Christopher Smith contributed to this story.