Aroldis Chapman Does Something Only Mariano Rivera Has Done

New York Yankees’ Aroldis Chapman in (AP Photo/Matt Slocum)

Aroldis Chapman just did something that only Hall of Famer Mariano Rivera has done before him.
The Yankees closer was named American League Reliever of the Month for May. Rivera is the only other pitcher to earn that honor as a Yankee, doing so in April 2008 and July 2009.
Chapman went 11-for-11 in save opportunities in May, allowing just one run and five hits while striking out 18.
Does Chapman have a chance to be a Hall of Famer one day?