While the Browns are resting and recovering from five action-packed days of training camp, we're using the off day to reflect on everything we've seen.

Here are our five biggest takeaways from an eventful start to the 2016 season.

QB pecking order unresolved, but decision is near

Hue Jackson promised reporters they'd be the first to know when he made a decision at starting quarterback. They're still waiting, but there's been plenty of progress toward that all-important choice, which was promised to be made before the Aug. 12 preseason opener in Green Bay.

Both Robert Griffin III and Josh McCown have looked sharp throughout training camp. They've been tasked with a lot, too, as Jackson hoped to have the entire offense installed by Thursday's practice.

Griffin has received the bulk of repetitions with the first-team offense. He's developed a nice chemistry with rookie Corey Coleman, who has been open across the middle, in the flats and well down the field. McCown similarly has found rhythm with Terrelle Pryor.

"We hope to be able to do a lot of different things as we continue to move forward," Jackson said. "We're taking steps every day and really learning how to do what we think we need to be doing to win football games."

It's been physical

Blaring siren noise has been welcomed with loud cheers from both players and fans since the Browns donned pads Sunday.

The full-contact periods are unscripted, making it even more dramatic when the moment arrives. On Tuesday, Jackson hit the siren within the first 20 minutes because he thought the team hit a lull. They responded with a spirited session that first pitted the first-team offense against the second-team defense and then saw the first-team defense try to stop the second-team offense.

This won't last forever, of course. At some point, the Browns will dial it back and allow the players to prepare their bodies for the upcoming season. For now, though, it's been an entertaining aspect to this year's camp for both fans and players.

"When you hear the sirens, you get an extra pump because it's a live period, you finally get to tackle," linebacker Christian Kirksey said. "That's what we need to work on as a whole, just tackling guys to the ground."

2015 draft class set to have major roles

The first six picks from Cleveland's 2015 draft class weren't all able to make an impact as rookies, but their respective opportunities have grown immensely as they enter their second season.

First-round pick Danny Shelton started nearly every game last year and is poised to do the same in 2016. Fellow first-rounder Cameron Erving appears to have a permanent home at center after moving between a few spots as a rookie.

Second-round linebacker Nate Orchard and Xavier Cooper each started slow before registering promising finishes to their rookie seasons. Now, they're both working with the first-team defense, as Orchard works on the opposite side from Paul Kruger at outside linebacker and Cooper looks to fill the shoes of Desmond Bryant at the five-technique on the defensive line.

"We both had a lot of great success in college. The next big thing is why they brought us here. We need to continue that here, especially with Danny," Orchard said. "We want to do some great things up front and really set the tone and make a statement and be the great defense we know can be."

Duke Johnson Jr., who gave the Browns offense a jolt last season, promises to have a major role alongside Isaiah Crowell in Cleveland's backfield.

Ibraheim Campbell, who primarily saw the field on special teams last season, is assimilated himself well next to Jordan Poyer at safety, where the Browns are looking to replace two starters from last year's squad.

Competitions outside QB could go down to wire

There's a due date set at quarterback, but other positions with open competitions promise to play themselves out well into late August and early September.

On offense, intrigue surrounds the overall pecking order at wide receiver, where the Browns have 11 players vying for six or seven spots on the initial 53-man roster. Josh Gordon, who has been out with a quadriceps injury, can participate in the preseason whenever he's healthy but wouldn't be able to join the regular season roster until Week 5. Right tackle, where Alvin Bailey is competing with rookie Shon Coleman, and the No. 2 tight end spot, which features a number of young players vying to work alongside Gary Barnidge, could take a while to sort itself out.

The Browns are still working through players and rotations on the defensive line in the wake of Desmond Bryant's season-ending injury. The same can be said in the defensive backfield, as a number of young players are receiving bigger opportunities as Joe Haden hits the final stages of his recovery from an ankle injury. The Browns continue to carry two kickers on the roster, too, as last year's main man, Travis Coons, competes with Patrick Murray.

Promising depth at ILB

Assistant coach Johnny Holland likes what he's seen from just about everyone at his position group, and that could make for some tough decisions at the start of next month.

Demario Davis and Christian Kirksey appear to have a hold on the top two spots. Behind them are reliable veterans Justin Tuggle and Tank Carder and rookies Dominique Alexander and Scooby Wright III. Last year, Cleveland kept four inside linebackers on its initial 53-man roster.

"Scooby and Dominique Alexander are great pickups for us," Holland said. "Those two are very hard workers for one, and they are learning our defense and are athletic guys, physical guys that can run. Scooby is a guy that's very instinctive. He had a lot of production in college, and it's showing up on the practice field now. He has a natural knack to get to the ball. Dominque, he's a guy that has speed and quickness and can run and change direction and a smart guy. They're going to be great additions to what we're trying to do here."