He's lived in the dreams of many, and created nightmares in many others. 

But The Sandman, Mariano Rivera, is in reality arguably the greatest relief pitcher of all time. 13 All-Star appearances are just impressive part of his resume. 

But what really sets the New York Yankees closer apart from the rest of his peers? 

The CBC's Shane Foxman explains why he's the best closer the game has ever seen.