City travelled to Stamford Bridge boasting an unbeaten Premier League record but that run came to an abrupt end as Sarri’s side clinched a 2-0 win.
‘After the Wolves game, he (Sarri) was terrifying,’ Rudiger told the Evening Standard. ‘He was going crazy. But that was okay because we shouldn’t have lost this match.
‘The day after [the telling-off], [Sarri] was very calm and clear-minded.
‘He spoke with us and made it clear that we have to believe in ourselves. He wanted us to go into the City game looking for the win.’
Despite losing to Spurs and Wolves in quick succession, Chelsea clinched an impressive win against defending champions City this weekend.
The visitors dominated the opening 45 minutes but still went in at the break behind after N’Golo Kante’s goal on the stroke of half-time.
David Luiz’s glancing header put the game to bed with 12 minutes remaining.
Discussing Chelsea’s wobble before the City win, Rudiger said: ‘We all knew what was going on, we didn’t have to lie to ourselves: the mentality was the problem.
‘One of the things that made us strong in difficult moments last season was that we knew how to suffer. This season, because things were going so good, we were thinking, ‘We don’t need to suffer’.
‘Two teams, Tottenham and Wolves, proved us wrong. That’s why, against Manchester City, everyone saw a team that was ready to fight. We wanted to take the supporters with us and we did that.
‘By ‘suffering’, what I mean is when we are having a tough time, we need to man up, keep our chins up and work.
‘We were playing beautiful football at the start of the season, but that doesn’t mean you forget the ugly side of it: winning tackles, tracking back, doing everything defensively. ‘Against Manchester City we were very clinical, which was also important. That has been missing over the last month, but against City we did something out of nothing.’