Ever since Yankees closer Mariano Rivera retired last season, having used "Enter Sandman" for 15 seasons, Metallica has been a little tight on work.
For nearly 20 years, New York Yankees pitcher Mariano Rivera has been mowing down opposing batters en route to becoming the greatest closer of all time. And throughout the majority of his career, his entry to the mound has been powered by Metallica's 'Enter Sandman.'