Mauricio Pochettino revealed his greatest joy as a coach was helping Espanyol avoid relegation, not Tottenham's incredible win over Manchester City.
Pochettino guided Spurs into the Champions League semi-finals after a remarkable second leg against City on Wednesday.
While his side were beaten 4-3, they advanced on away goals after a 4-4 aggregate draw.
However, Pochettino said keeping Espanyol, the club he played for, in LaLiga in 2008-09 during his first job as a coach was a happier moment.
"My greatest joy as a coach was in Almeria when we were saved [from relegation] because of what it meant to the whole Espanyol family," he told Spanish radio.
Simply, incredible.
— Tottenham Hotspur (@SpursOfficial) April 17, 2019
04 1-0 Sterling (1-1)
07 1-1 Son (1-2)
10 1-2 Son (1-3)
11 2-2 B.Silva (2-3)
21 3-2 Sterling (3-3)
59 4-2 Aguero (4-3)
73 4-3 Llorente (4-4) #UCL #COYS pic.twitter.com/A9UazdAJoc
Fernando Llorente's 73rd-minute goal against City proved decisive, the effort standing despite a VAR review for a possible handball.
Even later drama was to come, Raheem Sterling denied a stoppage-time goal – initially given – due to an offside.
"When he scored, I looked like The Incredible Hulk," Pochettino said.
"I took off my jacket, I threw my sweater down [onto the ground] ... I sat down and then that's when they said that the VAR had disallowed it for offside.
"At that moment, I revived. The injection of energy was incredible."
Spurs will face Ajax in the semi-finals.