MADRID, Spain (AFP) — Kylian Mbappe scored on his first Champions League appearance for Real Madrid as the reigning champion started its trophy defense with a 3-1 win over Stuttgart on Tuesday.

Antonio Rudiger headed home in the 83rd minute for the record 15-time champions after Deniz Undav had tied Mbappe’s opener just seconds into the second half.

Endrick, another Champions League debutant, wrapped up Madrid’s win with a low drive in stoppage time.

Stuttgart had the better of an entertaining opening period but Carlo Ancelotti’s team had a habit of grinding out victories when up against the wall and they took the three points despite the visitors’ impressive efforts.

“We suffered at the start because we lost a lot of duels... the important thing was to win and we won, so everything’s good,” Madrid coach Ancelotti said.

“You always have to fight at the start of the season, when you aren’t at your best.”

Mbappe reached five goals for the season in seven appearances across all competitions by opening the scoring when he raced into space at the start of the second half.

“I know I can do more, each game I feel better and now I’m scoring goals, and I’m happy here,” Mbappe told Movistar.

“(The game was) hard, but it’s the Champions League — it’s always difficult, but we won at home, we won the first game.”

“What we know is that the Champions League has changed and it’s important to win quickly to see if we can qualify quickly or not.”

Ancelotti selected full-back Dani Carvajal in central defense with Eder Militao not fit enough to start, while Jude Bellingham and Aurelien Tchouameni returned from injury to play in midfield.

Madrid lacked a certain balance after stalwart Toni Kroos retired in the summer and the game lurched from end to end under the Santiago Bernabeu lights.

Bundesliga side Stuttgart had more of the ball and the most dangerous chances in the first half, with Enzo Millot heavily involved.

The French midfielder dragged an early shot wide and forced Thibaut Courtois to tip over his dangerous effort from range, the best of a handful of saves by the Belgian.

At the other end, Mbappe had two shots saved by Alexander Nubel as he sought his first Champions League goal for Madrid.

Rodrygo had a shot narrowly deflected over while Madrid were awarded a penalty when Maximilian Mittelstadt appeared to catch Rudiger with a clumsy swipe, but the referee canceled the decision after a VAR referral showed no contact was made.

Courtois thwarted Angelo Stiller and Undav hit the crossbar for Stuttgart, but they were brought crashing down to earth at the start of the second half.

Just 21 seconds after the interval Mbappe found the net, teed up unselfishly by Rodrygo. It was blink-and-you’ll-miss-it and many did, still on their way back to their seats from the Bernabeu bars.

The former Paris Saint-Germain striker was not able to win the club game’s biggest prize while playing in France and his desire to lift the trophy matches Madrid’s obsession with it.

Stuttgart did not get the memo and after Vinicius crashed an effort against the crossbar, the German side tied.

Jamie Leweling came close himself with a flurry of attempts before hooking a corner back into the danger area for Undav to head past Courtois.

Ancelotti sent 18-year-old Brazil striker Endrick on for the final 10 minutes, hunting a winner to get the holders’ trophy defense off to the perfect start.

The goal arrived swiftly but not from Madrid’s galaxy of attacking stars, but instead center-back Rudiger, who nodded home from Luka Modric’s corner in the 83rd minute.

Vinicius missed a golden chance to seal Madrid’s win but his compatriot Endrick made no mistake with his only opportunity, drilling home from the edge of the box at the death.

The forward opted not to pass to his more experienced team-mates and took his shot early, catching out goalkeeper Nubel.

“He’s a kid with a lot of quality and he showed it,” Courtois said.