The Premier League leaders were beaten 2-1 by the Swiss side after allowing their intensity to drop in the second leg of their Champions League last-16 tie.
Not that Guardiola would let that slip in public. Given the number of A-listers missing this could be expected but will have disappointed Guardiola as his ethos is all about being able to interchange personnel and still operate seamlessly.
That canceled out the opening strike by Jesus, who is facing a real fight to be City's first-choice striker for the remainder of the season with Sergio Aguero scoring 15 goals during the Brazilian's seven-week absence because of a knee injury.
It is only the second time in the club's history that they've reached the quarter-finals of the Champions League, having made the semi-finals in 2016.
Elyounoussi then fired wide of the post down the other end as both teams continued to have joy in the final third.
Aymeric Laporte switched off as Elyounoussi cut back from the right and fed Lang, who rifled a shot past Bravo at the near post. The Catalan's team can look forward to the draw on Friday week in the knowledge that few opponents will wish to come up against them.
Instead Pochettino's side became the first English side to be eliminated in the Champions League this season.
The Catalan was critical of a flat performance that saw the Premier League leader slip to its second Champions League loss of the season - it suffered a 2-1 defeat in a group stage dead rubber away to Shakhtar Donetsk. But we are going to forget.
Son Heung-min's first-half effort had put Tottenham in control after they had drawn 2-2 in Turin last month and there was little sign of a Juve response until Gonzalo Higuain and Paulo Dybala struck in three second-half minutes.
Steven Gerrard has joked he would relish seeing Manchester United drawn with Manchester City in the Champions League quarter-finals. Many of those passes lacked penetration, though.
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Want one word to describe the first half? And, Guardiola asserted in his pre-match press conference that he will continue rotating his centre-backs. It was his first goal in his last 14 appearances.
A good performance for him at the World Cup might mean Kane trades Spurs white for Madrid white.