One, maybe two, of them will survive the cut and be on the Broncos’ initial 53-man roster in September.

The odds are tall for the Broncos’ 17 undrafted rookies. They know it. But they are also embracing the challenge.

“As a general group, they’ve done well,” coach Vic Fangio said of the entire rookie class. “Obviously, some have done better than others. Some have more to learn than others (because) some positions are more demanding than others mentally.”

The rookies have been in town less than a month.

They had their own three-day camp, followed by nine organized team activity workouts with the veterans.

They sit in the same meeting rooms as outside linebacker Von Miller and right guard Ron Leary, receiver Emmanuel Sanders and defensive end Derek Wolfe.

And they stay at the same hotel and ride the same bus to the facility (5:45 a.m. or 6:30 a.m.).

So what has the transition and experience been like for the undrafted rookies?

At a Broncos charity event last week, fullback George Aston (Pittsburgh), tight end Austin Fort (Wyoming), receiver Kelvin McKnight (Samford), outside linebacker Malik Reed (Nevada), offensive lineman John Leglue (Tulane) and defensive lineman Deyon Sizer (CSU-Pueblo) discussed their first month as professional football players.

Biggest surprise

A larger playbook. The speed of a non-padded practice. The rate that plays are installed. Being around Super Bowl champions. What has been the biggest surprise so far?

Aston: “The first day of rookie camp, the plays were two and three times longer than college. But then I just had to study hard and everything came to me and the other guys pretty fast. Overall, it’s just awesome being a part of an NFL team and you see guys like (quarterback) Joe Flacco and Von Miller come up to you and introduce themselves and that’s kind of a shock because you’ve watched them for so long on TV growing up.”

Sizer: “The biggest surprise is just being able to look around and seeing stars like Von Miller, Derek Wolfe and (defensive end) Adam Gotsis, knowing I used to watch them on TV and idolized them. Now I’m lining up with them.”

Fort: “Probably how fast the game is once you get out there with the veterans. Every guy just flies around. You need to be sharp and really know your stuff.”

McKnight: “The speed is pretty good. I just had to make better and quicker decisions. After my first week, I was up to par with it.”

Reed: “The biggest surprise is getting a chance to interact with the veterans and realizing they’re people like us. It’s not like they have big heads. … Definitely (a faster game). Everybody is big, fast and strong. The mental aspect of the game is the part that is dialed up at this level and how well you can execute when it matters most.”

Leglue: “The biggest surprise — I felt like coming in, I knew what to expect, but every morning pulling into the Broncos facility is a dream come true. I feel like every day, it’s another great opportunity to make the team.”

Asking and learning

Being in the same meeting room as veterans like Miller, Wolfe and Leary could be initially intimidating. They are players with big personalities and big resumes. But the rookies were quickly comforted by older players reaching out to them. Their message: Don’t be afraid to ask a question.

Leglue: “Day 1, all of (the offensive linemen) did a great job of saying, ‘If you have any questions, let us know.’ Ron Leary is from Baton Rouge and we had that Louisiana connection immediately. (Center) Connor McGovern had the o-linemen to his house the other day. (Right tackle) Ja’Wuan James is a great player and has been helping me with my technique and (left tackle) Garett Bolles has done an excellent job at that, too.”

Sizer: “To learn from them is unparalleled, obviously. They were really cool straight out of the gate. We introduced ourselves and they introduced themselves and were really welcoming.”

Fort: “They were really helpful from Day 1 and offered advice before I even asked. Props to those guys for being good leaders. All of them have been really helpful. In the blocking game, (veteran Jeff Heuerman) gives me pointers on how to position myself to make the blocks the best way I can.”

McKnight: “I’m very comfortable (asking questions). They’re just great dudes to be around and learn from. I’m not afraid to ask them about a certain route or a certain look I saw in practice. They’ve taken me under their wing and are making sure I can be the best I can.”

Reed: “(The best tip was) to continue to get better every day and to take each day as an opportunity. And don’t continue to make prior mistakes and learn all you can from the veterans when they’re on the field. The mental aspect of the game is huge at this level.”

Creating friendships

The undrafted rookies in particular are going through a lot of the same experiences. Limited reps in practice. Hearing the growls of assistant coaches. And off the field, staying at the same hotel. Even after Cutdown Day, the rookies believe they will stay connected.

Leglue: “It’s awesome. I would describe it like my freshman year of college, where you’re in the same environment and same dorm. We’ve really bonded.”

Fort: “Absolutely, we’ve bonded unbelievably. We have so much fun. We’re brothers already. It’s amazing.”

Reed: “The first few days, we didn’t know each other so it was an adjustment, but the longer we spend time together, the closer we’ve gotten.”

McKnight: “We’re all rookies and in this together. … Really, just the thought of me being out here is just a blessing. Waking up every morning and doing something I love. I always had this dream. I’m just happy and blessed to be here.”