Posted on: Mon 06 Jan 2014

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

The game yesterday was about the team that had more quality. Derby have got quality in their league, but it's a huge step up from playing very well in the Championship, which they are at the moment, to the level which Chelsea are at. It was tough for them, I couldn't see them scoring, and it was just a question of time for us.

Having said that, we still needed to make the breakthrough and it was fantastic to see John Mikel Obi pop up with the opening goal. When it went in the back of the net it was lovely to see the joy not only on his face, but also on the fans and the players' faces.

Yesterday was Mikel's 300th game for Chelsea, and he has been a stable player that has matured into his position. As a consequence, he gets the nod from managers when they want a certain style or are playing against a certain team. He's a man for a job and he's very reliable. To play 300 games is terrific and to get the goal was the icing on the cake.

Like in the Southampton game, Jose made a couple of changes because we needed to find that opening goal, and it worked again. Ramires moved deeper into the midfield, where he becomes a more confident player, and it had a big effect on our overall game.

It was great to see Tomas Kalas and Lewis Baker on the bench, and at 2-0 it gave Jose the chance to bring one of them on, in this case Baker. Even if only got five minutes at the end those five minutes are a stepping stone for him. He's a super young player and he now needs to make that step up.

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.