While Vinicius Jr is now on a 15-game run without scoring, dating back to early October, Garcia bagged his first goals of the season - something Alonso was thrilled about.
"Gonzalo had a dream game," the former Liverpool midfielder said. "Playing at the Bernabéu, in his first season with the first team, scoring a hat trick. I'm really happy for him, with the work he does every day, whether it's his turn to play or not. He always has an impressive attitude. He's a great example of what a Real Madrid academy player is."
Garcia himself could not hide his excitement at his treble for Madrid.
"It's a special afternoon," Garcia said. "I'm very, very happy to start the year like this. It's my first hat trick at the Bernabéu. This is Real Madrid. There's so much competition here. I know I'm the natural replacement for [Kylian] Mbappé, but the boss and my teammates always give me confidence."