WATCH: Mitch Marner makes young fans' day by fulfilling her birthday wish

Mitch Marner made a young Toronto Maple Leafs fan's birthday wish come true ahead of the team's playoff matchup against the Boston Bruins.

As Marner was warming up on the ice, he noticed a young girl in the stands holding up a sign saying:

"BIRTHDAY! A STICK?"

Seeing the birthday request, Marner skated over, signed his stick and handed the beaming young fan his stick. She was visibly excited and grateful to receive the special gift from her favorite player.

Watch the video here:

This is not the first time Mirch Marner made a fan's day. During a Valentine's Day Road game against the Vegas Golden Knights in 2019, a young Leafs fan in the stands caught Marner's attention with a heartwarming sign asking him to be her Valentine.

The sign was held by an adorable young girl behind the glass at the T-Mobile Arena.

"Hey Mitch to Be My Valentine. - Fist Bump? Selfie? Puck?" Said the sign.

Marner noticed the sign and proceeded to make the fan's Valentine's Day extra special.

First, he tossed her a puck over the glass, eliciting an ecstatic reaction. But he wasn't done - Marner then asked her for a selfie, which left the girl overjoyed.

The superfan's father later took to social media to express his gratitude for Marner's kindness.

"Hey @Marner93 .... That's my kid. You made her life. Thanks so much for being such a great sport and total class act. You're the franchise and always an All Star. See you in Phoenix!!!!" tweeted Mark Beretta. He also shared the heartwarming selfie his daughter got with her favorite player.

Beretta said that the family woke up to see the moment going viral:

"All we wanted was for @Marner93 to wave at his biggest little fan. Thanks so much, very proud to be part of #LeafsForever and Leaf Nation." He also revealed his wife made a sign for their next game in Phoenix asking for a photo with Auston Matthews.

Moments like this show why Mitch Marner is a fan-favorite in Toronto and around the league.

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Mitch Marner on playing the Bruins in the playoffs

Mitch Marner shared his thoughts on playing against the Boston Bruins to NHL.com.

"I don't think it matters. I think regardless of whoever we were going to play, it was going to be a competitive matchup and now obviously we are excited for that." Marner said.

Mitch Marner is a key player to the Leafs, providing 26 goals and 59 assists resulting in 85 points this regular season.

The Maple Leafs enter the series looking to finally get past their longtime rivals Boston, who have eliminated Toronto in three of the past five postseasons.