Changes by both managers but Omer comes away the happier boss after Cian Ashford's goal wins the tie for Cardiff.
“Cian (Ashford) is excellent," Omer Riza said. "He listens, he learns and he wants to do well. I’ve said since the start of the season that he has a lot of potential and we believe in him. His performances have been key to some of our results. I’m delighted for him.
“Both teams had changes. Sheffield United had a lot of players missing, like we did tonight. I’ve got massive respect for Sheffield United, Chris Wilder and the staff they’ve got here. They’re a good side, but I thought we played well tonight. In the first half, we created opportunities to get at their goal, probably could have scored one or two a little earlier as well. To hold on and make the changes that we made, I’m really happy to be in the next round.
"I think it was a resilient performance. It was great to see Will [Fish] out on the pitch today and great to see Ethan [Horvath] playing. It’s lovely to give these guys the opportunity, because it’s frustrating for them as well having to train every day and work really hard, but not get the minutes at times.
"It was nice to see youngsters playing as well. To come here and get a clean sheet, they put us under pressure, but we dealt with it and I’m really happy to get a result."
“The team spirit and morale is high. We’re unbeaten in four now and we’ll keep working hard. I’ve said all along, there have been games where we should have got three points but haven’t got results.
"It’s all a part of the pressures of the game, but I think the boys are dealing with it well. We need to kick on and keep trying to pick up points.
“We’re always looking to get positive results and to win games. That’s what we’ll try and do in two big games next week, we’ll be trying to get results in both.”
Sheffield United manager Chris Wilder after defeat by Cardiff:
"Their fringe players beat our fringe players. Their young players played better than our young players. It's as simple as that.
"It is really frustrating for me because we are brought up to win but I can't risk any of those senior players out there. People will say 'why put them on the bench?', I had to put them on the bench because I would have had even more young kids on the bench.
"I had to put a bit of perspective on it in terms of the experience. I didn't want to put Jack Robinson on but I had to. Some boys had vital minutes, some boys can be disappointed with their performance because they have not really asked the question of me. They can't say in that game I played really well which is disappointing. The players have pushed in training but when it comes to a game is when you need to step up.
"We have nine or 10 senior players out. I am disappointed. If they were back earlier we would have been able to put stronger side out but I can't risk it We are stretched as it is. It would have been suicidal. We have to take our medicine, get some players back and look forward to the last 20 games of the season. That is our ultimate aim. We have worked so hard to get ourselves in our position. We can't throw it away because we make some wrong decisions. I have to take that responsibility."