Winston went through some drills during the 20-minute session open to media, but was not in pads or a helmet and had his right middle finger heavily wrapped. Robinson said he didn't expect the injury to be serious.
"It was a temporary injury he suffered on a play," Robinson said. "He had about five seconds of jubilation and 15 minutes of pain after that. He'll be fine.
"It's on a timetable that we're feeling it will be sooner than later (that he returns)."
"I think we're finding the right combinations and I think we feel like we're getting closer," Robinson said. "We have a competitive situation at the field corner with Isaac Madison and Darius Winston. Greg Gatson - thank God he's here because he does add a situation where we don't lose much depth when he does play."
At boundary cornerback senior captain Ramon Broadway remains with the first team, though he is being pushed by freshman Eric Bennett.
"Eric Bennett is such a natural football player," Robinson said. "He's so natural, so instinctive, sees the big picture and he likes to hit people. I think that will be competitive as we go along with him and Broadway."
Robinson said Bennett's experience playing quarterback at Booker T. Washington High School in Tulsa has helped in his early progression.
"If you tell Eric something once he might make a mistake the next time, but I'm just telling you he's not going to make a mistake again," Robinson said. "He picks things up fast and understands things very well and that's because of his quarterback background. He's really picked up the corner play. He's being tutored along with Broadway and those guys, and he understands the defense quite well."
At safety, Robinson said the addition of Andru Stewart gives the Razorbacks four quality options along with Elton Ford, Tramain Thomas and Rudell Crim.
"I think we've got four kids there that will be competitive and we'll be able to use them in some form or fashion," Robinson said. "They all have good backgrounds and all good cover skills. We're feeling good about where we are.
"Tramain has been having a real good camp. He brings a physical element back there. He has great ball skills and makes good breaks. His decision-making is good - I won't say it's great - but it's getting better. If he gets you in his sights, he'll knock you out, but he's got to learn to stay high when he tackles."
Anthony Leon, a former safety, is in his third week as an outside linebacker practicing with the first team. Robinson said that move has been beneficial.
"He's made some plays for us at that position in both the run game and in the pass game," Robinson said. "He's having a lot more fun. He feels like he's a lot more involved in the game and it's been a good move for us. It's added a lot of depth.
"He's probably a guy that if you look at him at safety all along he's been an in-the-box safety. It's not that he didn't have cover skills, but there were some liabilities involved when he did play that safety. Getting down in the box he still has a safety principle but he's closer to the ball and we just felt like he saw things faster and made quicker reads. He's a big body that comes downhill and we're looking for that from our linebacker position.
"We've been trying to find a place for him and he's really doing a good job for us as a linebacker and we feel confident he'll continue to do that the rest of the season for us."
At defensive tackle Robinson said Alfred Davis and Byran Jones continue to have a good competition at nose tackle.
"Alfred is a kid that is playing solid in there for us at the nose tackle," Robinson said. "He plays well with his hands and plays with a good pad level, and at 330 pounds he's kind of a tough kid to move. I think he feels competition with Byran there. Byran had a great day for us yesterday.
"D.D. Jones is doing a decent job at the other tackle spot. He's got to continue to work to be an every-down player for us. His conditioning has to improve but he's productive when he does get in there and he's productive and makes a lot of plays. Those are a few kids in there that have country strength to them. You just have to continue to make sure they're doing the things our coaches are telling them to do."
Running back Dennis Johnson was not at practice on Wednesday. Running backs coach Tim Horton said Tuesday Johnson was "a little dinged up." Johnson was named to the Doak Walker Award watch list on Wednesday.
Junior receiver Greg Childs was back at practice on Wednesday after missing Tuesday's workout for unspecified reasons. Childs was one of 16 receivers on the practice field Wednesday. More walk-ons have joined the team this week after classes began at the UA on Monday.