Core Four - Wikipedia
Pettitte gets final out in his final start
Yankees' Andy Pettitte Announces Retirement: A 5-Time World Champion, News, Scores, Highlights, Stats, and Rumors
andy pettitte
Yankees Rumors: Andy Pettitte, 5-Time World Series Champion, Joins NYY as Adviser, News, Scores, Highlights, Stats, and Rumors
Pitcher Andy Pettitte announces retirement from baseball
Yankees' Andy Pettitte Announces Retirement: A 5-Time World Champion, News, Scores, Highlights, Stats, and Rumors
New York Yankees pitcher Andy Pettitte will retire after season – The Mercury News
Andy Pettitte Retires: The 10 'Most Clutch' Performances of His MLB Career, News, Scores, Highlights, Stats, and Rumors
Andy Pettitte Decides to Retire - The New York Times
Yankees' Andy Pettitte Announces Retirement: A 5-Time World Champion, News, Scores, Highlights, Stats, and Rumors