Cesar Azpilicueta has lauded the timely arrival of manager Thomas Tuchel at Chelsea, claiming 'everything has improved' under the German following Frank Lampard's dismissal.
Chelsea were in the midst of a crisis before Lampard's sacking at the end of January, with the club languishing ninth in the Premier League amid a dismal run of form.
But Tuchel has overseen a mini revival at Stamford Bridge, winning four of his first six top-flight matches that has seen his side move up to fifth and with a great chance of securing Champions League football come the end of the season.
And Azpilicueta is buoyed by Tuchel's impact, insisting the Blues have become much more solid in recent times ahead of their crunch first leg against Atletico Madrid in the last-16 of the Champions League.
The Chelsea skipper told Mundo Deportivo: 'Six weeks ago we weren't at our best. Now with Tuchel everything has improved. The team has better feelings. Although the Premier has nothing to do with it, reaching the Champions League on a roll is good news.
'The solidity has recovered, fewer opportunities are granted and that speaks of the work of the group, from the first attacker to the last defender. With the new coach we try to control the games with and without the ball.'
Speaking specifically about Lampard's dismissal, added: 'The results just weren't good. Frank has been a myth as a footballer, I was lucky enough to share a dressing room with him and after he trained me, but (Roman) Abramovich and his executive were the ones who decided to change course.
When reflecting on the poor run of results under Lampard, the experience defender claimed: 'The dressing room is responsible to the extent that we do not earn enough, but nothing more.
The Blues topped their Champions League group ahead of Sevilla, and were subsequently drawn against LaLiga leaders Atletico at the last-16 stage.
Tuchel's side face Atletico 'away' on Tuesday night in the first leg in Romania due to travel restrictions between England and Spain, and Azpilicueta is under no illusion regarding the task that awaits Chelsea.
When asked what worries him about Atletico, the right back replied: 'Everything. It is a stable team, reliable on a defensive level and with high quality alternatives in attack. And intensity has always been a hallmark. It is no accident that they are where they are.'
Chelsea's recent upturn in form, which took a slight knock when they drew 1-1 at Southampton on the weekend, has given them a big boost ahead of the resumption of their Champions League campaign.
Not long ago their chances in Europe's top tier competition had been completely written off and while their hopes still remain slim, Azpilicueta claims they can go far but they must produce a 'perfect' tie against Atletico.
'Talking off the field leads to nothing,' he added. 'Atletico will put us to the test and it is on the pitch that we will see if Chelsea deserves to be considered a candidate for the Champions League. I think we have our chance, but we have to have a perfect tie.'
