The Italian champions remain undefeated in the competition this season and sit fifth on 10 points at the midway point of the new league phase format.
"He's working well, he's training well... it's important for his growth. As long as there is humility, the heart always responds," Simeone told Movistar, while giving credit to Nahuel Molina's pass that led to Giuliano's goal.
Even a single point would have flattered Diego Simeone's side but they took all three when the Argentina international, on as a substitute, finished Antoine Griezmann's cross at the back post.
The European top-flight has switched from a group stage to a league phase where 36 teams play eight matches each, with the top eight in the table progressing directly to the next round, while the next 16 teams enter a two-legged playoff.
"It's amazing, to get a last-minute goal like this is always fantastic and it's good to give the fans something to cheer about," Atletico's former Leipzig striker Alexander Sorloth told DAZN.
Diego Simeone's Atletico Madrid shared an entertaining 2-2 draw with Villarreal as they began their La Liga campaign on Monday.
After a summer dominated by Spain, with La Roja storming to Euro 2024 triumph and their youngsters claiming gold at the Paris Olympics, the focus now turns to Spain once again as LaLiga kicks off on Thursday.
The 24-year-old Argentina international's exit marks a record sale price for City, eclipsing the 50 million pounds Chelsea paid for winger Raheem Sterling in 2022.
The 24-year-old cost City just £14 million when he signed from River Plate in January 2022 and his since enjoyed a meteoric rise, helping Argentina to World Cup and Copa America glory, as well as winning two Premier League titles and the Champions League at club level.
French striker Antoine Griezmann hits a hat-trick as Atletico Madrid thrash Sevilla 5-2 to cut the gap on La Liga leaders Barcelona back to seven points.
Sergio Escudero's goal after just 24 seconds set Sevilla on their way to a 3-1 win over Atletico Madrid and a place in the Spanish Copa del Rey semi-finals.
Atletico Madrid book their place in the quarter-finals of the Copa del Rey after seeing off third-tier Lleida, while new signing Luciano Vietto's hat-trick fires Valencia past Las Palmas.
Atletico Madrid leapfrog Valencia into second in La Liga thanks to Fernando Torres's first goal at the Wanda Metropolitano to edge out Alaves 1-0.
Real Madrid fail to take advantage of La Liga leaders' Barcelona's 2-2 draw with Celta Vigo as they are held to a goalless draw at Athletic Bilbao, while Atletico Madrid profit by beating Real Sociedad 2-1.
Real Madrid and Atletico each slip 10 points behind La Liga leaders Barcelona after an intense Madrid derby finishes goalless and the Catalans picked up an 11th victory in 12 games by winning 3-0 at Leganes.
Accustomed to unrelenting success in recent seasons, both Real Madrid and Atletico Madrid enter Saturday's first ever Spanish capital derby at Atletico's new Wanda Metropolitano stadium with little room for error.
Diego Simeone defends Atletico Madrid's style as another profligate performance left his side on the brink of an early Champions League exit after being held 1-1 at home by 10-man Qarabag.
Players and coaches of both Atletico Madrid and Barcelona hail the atmosphere at Atletico's Wanda Metropolitano as the thrills of a 1-1 draw drowned out fears the match would be overshadowed by political tension sweeping across Spain.
The biggest game of the La Liga season so far is shrouded in political tension as Barcelona visit Atletico Madrid in their first trip to the Spanish capital since a Catalan independence referendum marred by violence.