YANKEES: Team plans to activate Andy Pettitte on Monday
Andy Pettitte Decides to Retire - The New York Times
Andy Pettitte making a comeback with Yankees
Andy Pettitte Returning To Yankees, Pitcher Signs Minor League Contract
June 15 – Happy Birthday Andy Pettitte
Yankees pitcher Andy Pettitte to retire after season - The Boston Globe
Pettitte to announce retirement after 16 seasons
Andy Pettitte - Wikipedia
Andy Pettitte Statcast, Visuals & Advanced Metrics, MLB.com