1. Carabao Cup final 2019: Kepa defies Sarri
Chasing a historic quadruple, It was City who claimed the first major trophy of the 2018/19 season, winning 4-3 on penalties after 120 minutes of goalless action, but this stale final will always be remembered for an almost unprecedented challenge to Maurizio Sarri's managerial authority by Arrizabalaga.
The £71m Spanish keeper, the Blues' club record signing, had been struggling with cramp in the closing stages of extra time and Sarri decided to send on substitute Willy Caballero, who saved three penalties in a shootout to help Manchester City win this trophy against Liverpool in 2016.
Kepa refused to come off and Sarri backed down in a fit of rage - before City won the shootout, with Raheem Sterling scoring the decisive penalty.
And the Spaniard's performance in the Wembley shootout was a mixed bag to say the least; Sergio Aguero's spotkick squirmed underneath his body, and even though he denied Leroy Sane from 12 yards, it was to no avail.
2. Manchester City 1-3 Chelsea 2016/17: Conte's men lay down title marker
Finding himself on the wrong end of a 3-0 first-half thumping at the hands of Arsenal at the Emirates Stadium, Antonio Conte reverted to a three at the back system after this match, familiar to him from his time with Juventus and Italy.
The switch to 3-4-3 sparked an incredible 13-game winning run, with game eight of that run coming at the Etihad Stadium against Pep Guardiola's side.
The Blues delivered an impressive statement of intent on the day as they cut City apart on the break after going behind to Gary Cahill's own goal on the stroke of half-time, when he diverted Jesus Navas' cross beyond keeper Thibaut Courtois.
The game turned on Kevin de Bruyne's 56th-minute miss with City in control, crashing Navas' cross against the bar from inside the six-yard box.
Chelsea were level on the hour when Diego Costa bullied Nicolas Otamendi to score and they were ahead 10 minutes later when substitute Willian raced clear to beat City keeper Claudio Bravo.
Eden Hazard sealed the victory in the final minute of the game with another devastating goal on the break, showing too much pace for Aleksandar Kolarov.
The match boiled over in injury time as Aguero was dismissed for an ugly tackle on David Luiz before Fernandinho followed him down the tunnel for appearing to grab Cesc Fabregas by the throat and push him over the advertising hoardings.
3. Manchester City 1-1 Chelsea: Lampard scores... for the Sky Blues
This was an eagerly-awaited showdown at the Etihad Stadium as Frank Lampard, on loan from New York City FC until January, faced the club which he had just departed from as a legend after scoring 211 goals in 648 apperances across 13 incredible years.
The game itself provided few clear chances as defences dominated, but it sprang to life in the second half after Pablo Zabaleta was shown a second yellow card for a challenge on Costa in the 66th minute.
Andre Schurrle tapped in a cross from Hazard just five minutes later to set Jose Mourinho's men on course for a fifth successive Premier League win, but they were to be denied by 'Super Frank'.
Coming off the bench, in typical Lampard style, the midfielder steered a volley past the helpless Courtois after arriving late into the box.
Although the former England international refused to celebrate his goal, his new team-mates and fans were jubilant as City stayed within five points of the leaders, with Lampard on the verge of tears at the final whistle as he received a standing ovation from the traveling fans.