Meanwhile Rune was forced to dig deep to fend off the challenge of American Toby Kodat 6-3, 6-7(5), 6-0 to replicate the feat of Fernandez for Denmark.
Fernandez, 16, who fell to eventual champion Coco Gauff in last year’s semi-finals, lifted the trophy without dropping a set.
Redemption for Leylah
The top seed also bounced back from losing the Australian Open final to close friend Clara Tauson back in January, making it an extra special triumph for the Canadian.
“Of course this year my goal was to win one junior Grand Slam, I fell short in Australian Open junior. I was very happy to be able to have another opportunity here in Paris and to win it,” declared Fernandez, who has always had a special affection for Roland-Garros.
“I’d like to win all the tournaments, all the Grand Slams, all the tournaments in the world. But Roland-Garros is very special for me because it was the first Grand Slam I watched on TV. So being able to win here as a junior player is very special for me.”
Riding the Canadian wave
Fernandez has been motivated by the soaring success of compatriots such as Bianca Andreescu and Felix Auger-Aliassime making waves on the professional circuit.
“It's very inspiring that Bianca was able to win Indian Wells. And it's a bummer she wasn't able to play here in Roland-Garros. I wanted to see her and congratulate her with all her successes. But I'm happy that Denis (Shapovalov), Felix, Bianca are able to do everything great and it motivates me to do better for the next couple of years and for the future,” praised the Canadian youngster, learning from close quarters about their world class work ethic.
“I have known Felix for a few years, I have practiced beside him when I was younger. I've seen him with his dad and how hard he works. So, it gave me more motivation to really follow him and how he's doing.
“Last year I was able to practice with Bianca a few times and played against her, so I'm happy to get those opportunities.”
Fernandez, able to answer press questions in English, French and Spanish, hopes that her dedication and attitude can fire her to competing full-time on the WTA Tour by next year’s Roland-Garros.
“I believe it's a fighting spirit. I don't let go,” the Canadian said describing her strengths. “All points are important to me from the first to the last. Even when I'm losing, I'm never going to let go.”