MLB players born on December 31

2 MLB players on file were born on December 31, 2 of them on a roster now: Ryan Yarbrough, Yaramil Hiraldo.

• Ryan YarbroughRP · NYYborn 1991 · 34
• Yaramil HiraldoRP · BALborn 1995 · 30

Birth dates as ESPN files them: nearly every player on a roster has one, many players long retired do not.