It's been little more than 12 hours since the Browns got back to Berea, but Hue Jackson has already studied the tape from Friday night's loss at Green Bay in the preseason opener.

"The first game, there's gonna be some good and there's some bad," the first-year coach said Saturday on a teleconference with reporters.

"But obviously the good thing is there's a lot of things to learn from. There were bright spots, there were some things we can build on and obviously there were some things that we've got to corrected … we have to go back to work tomorrow and correct some issues."  

Without further ado, here are five things to know before the Browns take the field Sunday for Day 12 of training camp.

WR Rannell Hall out for season, QB Austin Davis in concussion protocol

Jackson said wide receiver Rannell Hall will miss the season after breaking his fibula.

Hall, who appeared in one game for the Browns last season, was having a strong training camp lately and caught two passes for 27 yards in Green Bay.

Jackson also said quarterback Austin Davis is in the team's concussion protocol after leaving the game in the second half and that wide receiver Terrelle Pryor is fine after an X-Ray on his hand came back negative.

"We had some bumps and bruises in the game," Jackson said, adding, "I think we'll go back to work with the guys we have and hopefully we'll get some guys back and keep moving forward."

Browns sticking with Austin Pasztor at right tackle

The Browns seem to have found some stability at right tackle on their new-look offensive line, as Jackson said they'll stick with Austin Pasztor.

"I thought Austin battled, I thought he battled hard for his first time under the gun," he said. "I thought he competed extremely hard and I think he's only going to get better."

Pasztor, the fifth-year player from who started four games for Cleveland in 2015, joins Joe Thomas, Joel Bitonio, Cameron Erving and John Greco on the Browns first-team unit.

Jackson also made it clear that he thinks the offensive line is capable of playing better and such improvement should come as the group gels together.

"I think we need to get those five guys playing together," he said, pointing to the fact that Greco and Erving have missed time because of injuries. "I thought Joel Bitonio and Joe Thomas did an outstanding job, but again, it's a unit it's a whole unit and when pieces of it don't play as good, the group suffers."

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Shaking off the rust**

Jackson continued to offer measured praise for Robert Griffin III, who made his debut as the Browns starting quarterback.

"I thought he stood in the pocket and looked real relaxed, kept his poise and tried to make some throws downfield," Jackson said.

Griffin, the former Redskin who made his first start since 2014, passed for 67 yards and an interception on 4-of-8 attempts. He also connected with Pryor for a 49-yard bomb on Cleveland's first offensive play from scrimmage.

"I thought for a guy that hasn't played in a while," Jackson said, "I thought there were some positives there."

Run game didn't meet 'high expectations'

In what was a slow night for the Browns offense, Jackson made it clear Cleveland can and will do better when it comes to running the football.

"It was OK, I have a high expectation for our running game," he said. "We had a couple opportunities to make things happen that we kind of didn't get done and, again, those are the learning things that I'm talking about for our guys. When we try to do certain things that the opportunity is there, we just have to make sure we follow through."

The Browns have said they want to be a run-oriented offense and Jackson praised Isaiah Crowell and Duke Johnson Jr. this past spring as two of the more talented running backs he's seen.

While the pair saw limited action at Green Bay, Raheem Mostert (who took reps with the second-team) led the Browns with 43 yards rushing on five carries, including an impressive 27-yard run that showcased what Cleveland might be able to do in the future.

"We'll get this solved," Jackson said of the run game, "I promise you that."

Real competition at kicker

While Jackson warned postgame against reading too much into Patrick Murray attempting the Browns' lone field goal of the night, he did say the former Buccaneer is pushing second-year kicker Travis Coons.

"He's challenging him that's for sure," Jackson said, "(but) I'm not going to say he's ahead."

Murray, who joined the Browns this summer, knocked down a 46-yard field goal in the second quarter.

Jackson said "it's about competition," at every position as Cleveland looks to put the best possible players on its roster. ​

Coons, who enters his second year with the Browns, set an NFL record last season by knocking down 18-straight field goals to start a career.