Yankees, Rivera not concerned with recent slips
Yankees great Mariano Rivera to retire – no one in Major League
Remembering Mariano Rivera's historic career on his 50th birthday
Yankees' Mariano Rivera says this is final season
42 things you need to know about Mariano Rivera - Sports Illustrated
Mariano Rivera: MLB's Greatest Closer - Pinstripes Nation
No Fountain of Ruth in Sight for These Aging Yankees - The New
New York Yankees: Mariano Rivera 'blessed' to be last to wear
It's Unanimous: Mariano Rivera Is a Hall of Famer - The New York Times