Yankees Core Four

Mets Deteriorate While Four Core Yankees Sustain Themselves - The New York Times

Mission 27 eBook by Mark Feinsand - EPUB Book

Core Four to take part in first pitches

New York Yankees Derek Jeter Mariano Rivera Andy Pettitte Jorge Posada Framed Print by Iconic Images Art Gallery David Pucciarelli - Fine Art America

Unanimous Hall of Famer and Core Four Member, Mariano Rivera, Engages in Rapid Fire, Leaves Out Derek Jeter - EssentiallySports

Yanks to retire numbers for Williams, Pettitte, Posada

Core four down to one: Pettitte plans retirement after season

Core Four - Wikipedia

From Farm To Table — College Baseball, MLB Draft, Prospects - Baseball America

May 3rd, 2010 - New York Yankees Core 4 Multi-Signed Sports Illustrated Magazine - Featuring Derek Jeter, Mariano Rivera, Jorge Posada, Andy Pettitte - JSA LOA on Goldin Auctions

New York Yankees Core Four at Old Yankee Stadium 16x20 Photo Team-Signed by (4) Yankees Greats with Jorge Posada, Andy Pettitte, Mariano Rivera & Derek Jeter (Steiner COA)

The 'underrated heroes' who discovered the Yankees' Core Four

Andy Pettitte talks up the benefits of the Yankees locking up their new ' core' – New York Daily News

Core Four reunites to honor Yankees captain Derek Jeter – New York Daily News