Mets reliever Jefry Yan reacts to boos as his viral strikeout celebration reaches the majors

New York Mets relief pitcher Jefry Yan made his major league debut on Wednesday night. During the game, Yan reacted to boos from the crowd.

The negative crowd reaction was tied to his distinctive leaping strikeout celebration. The celebration had previously gone viral online before finally making its way to the major leagues.