Posted on: Mon 18 Feb 2013

Throughout the season former player Clive Walker provides radio and TV commentary on Chelsea's games. Here he selects five aspects from Sunday's FA Cup win that caught his eye…

1. I thought Brentford's resilience was good. Before we scored they looked like they were beginning to tire a little bit. Their organisation was excellent, and they looked like they had a bit of confidence about them. They acquitted themselves well but you felt it was a question of time before Chelsea scored.

2. I don't think there was any need for the manager to change things around tactically at any point. If they had scored we might have had to, but it seemed to work well and we had chances throughout the first half, and as soon as we scored it was all over. It was comfortable in the end and I was pleased he put out a strong side to try and win the game early. It didn't quite work out that way but when the goals started to go in players could take their foot off the gas a little bit. All in all it was a good performance and we all would have taken a 4-0 beforehand.

3. There was a bit of rotation from Rafa Benitez in his line-up. We expect players to be at their peak every game they play but Rafa sees them on the training field and understands how they are during the week, so he can see who is mentally as well as physically tired. It was great to see Victor Moses come back and he maybe had a little bit of tiredness there, but he still has a spark and causes problems. It will be good to see John Mikel Obi when he comes back, and things are coming together quite nicely with only Oriol Romeu out injured.

4. Juan Mata comes up trumps every game. He is a delight to watch. I think sometimes we expect him to be involved in every attacking move we make but that's not realistically possible. When he is on the ball you get real quality and his goal set us on the road to victory. That's 16 for the season, a great return already. We see him as a creative player but with a bit of luck he can go on and get 20-plus. He's a little bit special.

5. I think Oscar could be even better. He's going to be a big star at Chelsea. The more games he plays and the more he settles the more we will see fantastic things from him. Oscar has a good right foot, a calmness in front of goal, he puts his foot into a tackle and he doesn't mind getting up and winning a header too. He's an all-rounder and will continue to develop. At 21, it won't be every week, but I think he's getting better as the season goes on. He can go missing at times and that could get better but all in all, he has hit the ground running and is really playing well.

Clive Walker is part of the commentary team for games on this season. Go to our Matchday Live section or hear it via our Mobile App.