The 'underrated heroes' who discovered the Yankees' Core Four
Core Four - Wikipedia
SF Giants OF Austin Slater reveals MLB threatened jobs of anyone collecting balls for analysis : r/baseball
A few sticking points with MLB's new 'foreign substance' policy, and other thoughts - The Boston Globe
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Jorge Posada - Wikipedia
Un-four-gettable: The Core values its role in Derek Jeter's final home opener - Newsday
Every move of the 2022-23 offseason, tracked
The best fifth-round picks in MLB Draft history
Yankees' legendary Core Four of Derek Jeter, Mariano Rivera, Jorge Posada and Andy Pettitte watches back-to-back home runs from rookies Tyler Austin and Aaron Judge - ESPN
MLB free agent tracker: Where every star signs, and what the deal means
Big Read: Have the New York Yankees found a new Core Four?
The History of Relief Pitching Part Five: the Famous Firemen of October - Cooperstown Cred
Yankees To Re-Sign Anthony Rizzo - MLB Trade Rumors
Core Four - Wikipedia
Just saw a ridiculous stat on a MLB Instagram account I follow. Tony Gwynn career 4-hit games: 45. Career 2-strikeout games: 34. Really really nasty. : r/mlb
