That was stressed during Saturday's pair of workouts.
"We played the run game real well," Robinson said in his first remarks since the aforementioned scrimmage. "We were real physical and we were flying around extremely well. The thing about though is we still can't give up the long ball as much as we did.
"The pattern of our scrimmage – we sit down there and cordoned as far as how much we wanted pressure and stuff," Robinson added. "But bottom line they (the defenders) were flying around. They had 61 runs and we held them to 2.47. That's a great start against the run game, but it was still matched with the passing game and rush so we can be productive with that."
"I thought our attitude was probably the most important factor," Arkansas quarterback Tyler Wilson said. "We came into today with a great attitude for both of the practices and I think it contributed to the success of both of them and how we worked."
Robinson is working with a mostly veteran group on defense when it comes to the first two units.
"We are very fortunate in that right now," Robinson said. "In our mind's eye, we still have a decision to make there on those freshmen that we like, but I think it is starting to level off a little bit and we have a better understanding of what those guys are gonna be. To have the depth that we have is refreshing. It still is a matter of getting in the playbook and understanding what their job is."
The Razorbacks have been shuffling safeties in and out with Tramain Thomas, Eric Bennett, Elton Ford and Ryan Farr all seeing plenty of action in addition to some youngsters.
"We are still trying to figure out the right combinations," Robinson said. "We have certain guys who are competing every day every day in practice and they still haven't gotten the idea that ‘look, it's every play' and if their effort grade doesn't pan out at the end of the day then we are not going to sit there and tolerate that. We still have those situations that we are going through with that group in finding out who are the best players on the field and doing it our way."
He does not have too much concern about the two safety sports – in part because of who is in front of them.
"I think it works hand in hand because of how talented we are up front," Robinson said.
Robinson praised junior college transfer Alonzo Highsmith, who has one of the first-team linebacker spots.
"I think the best thing we did coming into camp was putting Highsmith in that first rotating unit," Robinson said. "I think he has gotten better and better because he is working with first unit so it's not a nuance. He was overwhelmed early, but he sure seems to be picking it up."
Robinson has also really liked what he has seen of true freshman cornerback Tevin Mitchel.
"You guys can see the flash of that kid," Robinson said. "He is exactly what we are looking for. I think that scrimmaged showed he has great courage. He is slim, but he plays big. He is extremely talented and has a great future for us. And who knows when that future might be? It might be after this next scrimmage. It might be right after that next day to see how he rolls. That is the kind of football we are looking for."
As is fellow true freshman Kelvin Fisher, who was moved to tailback from cornerback when Knile Davis was lost for the season with an injury during Thursday's scrimmage.
"We are going to do what is best for the football team and we have done it with several other positions," Robinson said. "When we Kelvin, he was one of those guys that we started out in the defensive backfield, but we always had it in the backfield of our mind – especially Coaach (Petrino) did – that if something was to happen, a scenario to occur that this might be the guy we could pull over there.
"All of his film when we were evaluating him was really mainly on offense," Robinson added. "We saw his feet when he ran the ball, we saw his balance so we were able to transfer it over to that and say he would be a good defensive back. The thing about the youngster is that he makes plays. He is a very, very intelligent football player."
Senior offensive guard Grant Cook returned to practice for the first time since Monday after being getting injured late in the practice.
"I think he is a leader for us, a guy that gets in the huddle," Wilson said. "He is a guy that has been around and it is good having that kind of guy in the huddle. So he brings a lot to the table."
He worked with a first-team offensive line that featured true freshman Mitch Smothers and senior Grant Freeman at the tackles, Travis Swanson at center and Alvin Bailey.
"The last period there was a pressure period where they were bringing stunts and stuff and they did a really good job of picking it up," Wilson said. "I was able to get up and step up in the pocket and get some throws downfield which was nice."
"I think we have got the coaching staff to do some positive things and to get them ready for it," Wilson said. "We practice and it is really tough and fast-paced. They get a lot of reps, which is positive. I trust when the time comes they are going to be ready to be the best they can be. Really that is all I can ask for. I think we will do some things to keep the pressure off of them."
Sunday's workouts are closed to both the media and the public.