'By: Jayson Tatum': Celtics star's shoe-tying tutorial goes viral

After the Boston Celtics beat the Miami Heat in five games to move to the Eastern Conference semifinals, Jayson Tatum had some extra free time on his hands.

On Friday, Tatum posted a tutorial video on his YouTube page, demonstrating how to tie a shoe. The player from St. Louis, Missouri used his signature Jordan Tatum 2 shoe as part of the tutorial.

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The tutorial is a sequel to Tatum's how to "TIE A TIE" video that he made in April 2013 -- two years before he went to play college basketball at Duke for legendary coach Mike Krzyzewski -- which garnered close to eight million views.

Tatum's channel also featured a short film of him from his high school days, which displayed his humor and professionalism at a young age. Titled "J TATUM MOVIE," he lists reasons why he attends Chaminade College Preparatory Academy. Florida Panthers left wing Matthew Tkachuk, who went to school with Tatum, also appeared in the video.

Tatum and the No. 1-seeded Celtics will play the winner of the Orlando Magic-Cleveland Cavaliers series in the semifinals.

'By: Jayson Tatum': Celtics star's shoe-tying tutorial goes viral

'By: Jayson Tatum': Celtics star's shoe-tying tutorial goes viral

'By: Jayson Tatum': Celtics star's shoe-tying tutorial goes viral

'By: Jayson Tatum': Celtics star's shoe-tying tutorial goes viral

'By: Jayson Tatum': Celtics star's shoe-tying tutorial goes viral