By Madison Williams The center is out for Game 1 vs. Heat due to entering health and safety protocols on Tuesday. View the original article to see embedded media. Hours before Game 1 of the Celtics-Heat Eastern Conference finals, Boston announced that starting center Al Horford entered health and safety protocols and would miss Tuesday night’s game. The announcement came as a surprise after Horford appeared in a Twitter video Tuesday afternoon highlighting the team’s practices leading up to Game 1. This is Horford’s first playoff absence this season. According to ESPN’s Adrian Wojnarowski, Hor…