A 2-1 defeat to Shakhtar Donetsk may not have been how Pep Guardiola envisaged his 100th Champions League match as a manager going.
Guardiola fielded a much-changed side on Wednesday, with City already guaranteed to finish top of Group F and a derby against local rivals Manchester United and Jose Mourinho set for Sunday.
Sergio Aguero's late penalty was not enough to stave of a 16th Champions League loss of the pioneering Spaniard's managerial career on a milestone night in Europe's premier competition.
With the help of Opta, we look at how Guardiola's record measures up against his contemporaries.
BAVARIAN BLISS & HOME COMFORTS
Guardiola's best win percentage in the Champions League (63.9) came during his three seasons in charge of Bayern Munich, where he won 23 of his 36 outings in the competition.
However, the Spaniard was unable to replicate his two title wins with Barcelona, the Bundesliga side going out at the semi-final stage in each year of his tenure.
Guardiola's sides prove particularly formidable at home. He has overseen just four defeats on home soil – two apiece at Barca and Bayern – for a win percentage of 78.43, and remains undefeated in this competition as City boss at the Etihad Stadium.
DONETSK DEJA VU
The 46-year-old has not pitted his wits against any side on more occasions than Shakhtar, his eight clashes with the Ukrainian side only matched by meetings with Arsenal.
It is therefore unsurprising that Guardiola has beaten Shakhtar more than any other side (five wins), while he is four from four against CSKA Moscow and Viktoria Plzen – the latter by an aggregate score of 12-0.
There are just four sides against whom he holds a win percentage below 50 per cent: Celtic, Chelsea, Real Madrid and Rubin Kazan.
UP AGAINST THE GREATS
Guardiola will move beyond Mircea Lucescu (103) into fifth on the list of the Champions League's most experienced managers should City make this season's quarter-finals.
He has some way to go to match rival Jose Mourinho (139), with Carlo Ancelotti (153), Arsene Wenger (184) and Alex Ferguson (190) even further in the distance.
Why Guardiola is considered the best in the business is evidenced by a Champions League win percentage of 61 – the highest of any manager to have overseen 50 games in the competition and better than Louis van Gaal (60), Vicente del Bosque (56.7), Rafael Benitez (55.8) and Mourinho (55.4).
8 - Pep Guardiola has reached a semi-final in all eight of his seasons in senior club management. Business. pic.twitter.com/bxFA5sCmnH— OptaJoe (@OptaJoe) March 11, 2017
Guardiola led Barca to a historic treble in his first season at the helm in 2008-09 and reclaimed the Champions League trophy two years later.
His two European triumphs match the likes of Mourinho, Ferguson, Del Bosque, Jupp Heynckes and Zinedine Zidane.
Carlo Ancelotti is the only coach to have won the competition in its modern guise on more occasions, leading AC Milan to glory in 2003 and 2007 before guiding Madrid to the long-awaited 'Decima' in 2014.
|Celtics still hoping to re-sign Smart|
|Villarreal sign highly rated Velez midfielder Caseres|
|Juventus signing Ronaldo should give Milan optimism – Kaka|
|Berrettini masters Mayer in Bastad|
|Manchester United and Ajax agree Daley Blind transfer|
|Familiarity with demands of Real Madrid an advantage – Lopetegui|
|Parmentier rallies to avoid Bucharest exit, Arruabarrena bows out in Gstaad|
|Steelers fail to sign Bell to long-term deal|
|Over 10 per cent of Croatia´s population welcomes World Cup heroes home|
|Thierry Henry quits pundit role to focus on coaching|
|France´s World Cup winners given heroes´ welcome in Paris|
|At the end we will see who is best - Ronaldo sidesteps Messi rivalry|
|Qatar? China? Ronaldo only has eyes for glory at Juventus|
|Proud Kane praises team-mates after Golden Boot win|
|The Open 2018 diary: Is that Tiger Woods? Harrington feels the Burn...|
|Porte targeting Vuelta after Tour de France anguish|
|Maradona madness, #WaistcoatWednesday, bruised Batshuayi - Alternative World Cup awards|
|It could be the best time - Martinez hints at Hazard Chelsea exit|
|England call up Billings as cover for injury doubt Roy|
|McIlroy on track for fitting major haul - Harrington|
|Froome plays down Thomas battle for Sky supremacy|
|Carnoustie record counts for little at The Open, says Fleetwood|
|I don´t see it - Napoli chief De Laurentiis plays down talk of Callejon-Suso swap|
|One or two changes required at Chelsea, says Sarri|
|Monaco confirm Golovin approach|
|Let´s keep making noise! - Serena dedicates Wimbledon run to fellow mothers|
|Full list of Open tee times|
|Fakhar inspires another big Pakistan ODI win|
|Spieth ´annoyed´ by re-watch of 13th hole|
|Kaka claims Ronaldo arrival will boost all Italian clubs|
|Spieth vows to be more artist than tactician in Open defence|
|Conte thanks Chelsea players, staff and fans|
|Rodgers: I´d love to play with the Packers to 40|
|Sevilla insist N´Zonzi will cost €40m|
|Hugill shows mystic powers with accurate World Cup predictions|
|World Cup 2018: FARE ready for post-tournament challenges in Russia|
|Woods grouped with Matsuyama and Knox at Open|
|Matthaus questions idea of French dynasty|
|Chandimal, Sri Lanka coach and manager banned for two Tests and four ODIs|
|Sassuolo demand at least €30m for Berardi|
|French media revels in ´crazy´ triumph|
|Mafi released on bail after alleged assault|
|Bierhoff must go! Berthold calls for Germany changes|
|Joshua to fight Povetkin in September|
|World Cup 2018: Goal-laden final adds to staggering World Cup stats|
|Runners and Ryders: Molinari impresses again as stars prepare for The Open|
|Macron to greet France team after Champs Elysees parade|
|Casillas and Suarez critical of VAR after World Cup final|
|TMO protocol clearly not working, says SANZAAR|
|Americans seek joy of six at Carnoustie, Rose out to end wretched run - The Open in Opta facts|
|Ronaldo arrives in Turin for Juventus medical|
|Stone: I had no idea what my score was!|
|The Open: A look back at Van de Velde´s Carnoustie calamity|
|Rakitic proud of ´brother´ Modric´s Golden Ball award|
|Serena can surpass Court, but Graf was the real target - Krajicek|
|Ronaldo moved to remain motivated - Kaka|
|Silva confident on Everton transfer targets|
|Golden Boot winner Kane aims to break August hoodoo|
|NFL training camp 2018: Contract holdouts and where they stand|
|Guardiola took me to another level - Alaba|
|Madrid selling Ronaldo a ´historic error´ - Calderon|
|MLS Review: LAFC, Atlanta held at home|
|Stones will watch re-runs of England´s World Cup matches|
|Ferdinand challenges Mourinho to unleash Pogba at United|
|Mbappe: I´m staying at PSG|
|Former NHL goalie Ray Emery found dead|
|Pirates secure five-game sweep of Brewers with walk-off win|
|WATCH: LeBron receives standing ovation at Lakers´ summer league game|
|Tony Romo wins celebrity-filled American Century Championship|
|McGregor praises Putin after attending World Cup final|