MLB Team Birthdays

In a group of 23 people the mathematical probability is more than half (.507) that two of them will have the same birthday. This is unintuitive but true! Let's test it out.

Major League Baseball teams have an active roster of 25 men. The probability is .569 that a team will have two players with the same birthday.

Angels

Astros

Athletics

Feb 19 Dan Otero, Josh Reddick
Nov 1 Coco Crisp, Stephen Vogt

Blue Jays

Braves

Sep 9 Edwin Jackson, Joey Terdoslavich
Sep 12 Freddie Freeman, Matt Wisler
Oct 7 Brandon Cunniff, Mike Foltynewicz
Dec 30 A.J. Pierzynski, Danny Burawa

Brewers

Nov 17 Mike Strong, Ryan Braun
Nov 26 Corey Knebel, Matt Garza

Cardinals

Cubs

Diamondbacks

Mar 15 Keith Hessler, Nick Ahmed

Dodgers

Jan 12 Alex Wood, Chris Hatcher

Giants

Indians

Mariners

Apr 12 Edgar Olmos, Hisashi Iwakuma
Jul 1 Mike Montgomery, Nelson Cruz
Nov 28 Danny Hultzen, Jesus Montero

Marlins

May 23 Kyle Barraclough, Mike Dunn

Mets

Mar 27 Johnny Monell, Matt Harvey, Michael Cuddyer
Jun 19 Jacob deGrom, Logan Verrett
Aug 29 Anthony Recker, Noah Syndergaard
Oct 27 Jon Niese, Ruben Tejada
Dec 20 David Wright, Erik Goeddel

Nationals

Jun 30 Blake Treinen, Trea Turner
Jul 20 Pedro Severino, Stephen Strasburg
Aug 10 Matt den Dekker, Sammy Solis, Wilson Ramos
Nov 2 Brian Goodwin, Yunel Escobar

Orioles

Oct 12 Nolan Reimold, Paul Janish
Dec 22 Rey Navarro, Zach Britton

Padres

Jan 17 Cody Decker, Frank Garces
Sep 23 Jedd Gyorko, Matt Kemp

Phillies

Feb 10 Dalier Hinojosa, Jeanmar Gomez
Sep 28 Cameron Rupp, Severino Gonzalez
Nov 14 Freddy Galvis, Joely Rodriguez

Pirates

Jun 25 Aramis Ramirez, Bobby LaFromboise
Oct 19 J.A. Happ, John Holdzkom

Rangers

Dec 27 Chris Gimenez, Cole Hamels

Rays

Red Sox

Reds

Jan 4 Jason Bourgeois, Michael Lorenzen, Raisel Iglesias
Jan 7 Brayan Pena, Tucker Barnhart

Rockies

Mar 13 Eddie Butler, Scott Oberg
May 15 Brandon Barnes, Justin Morneau
Aug 7 Rafael Ynoa, Tommy Kahnle
Aug 13 Boone Logan, Dustin Garneau
Oct 19 Daniel Descalso, Tyler Matzek

Royals

Tigers

Feb 20 Buck Farmer, Justin Verlander

Twins

Jan 14 J.R. Graham, Mike Pelfrey
Jun 15 Eduardo Nunez, Trevor Plouffe

White Sox

Jan 20 Geovany Soto, Matt Albers
Jan 24 Jose Quintana, Tyler Flowers
Sep 24 Michael Ynoa, Scott Carroll

Yankees

Feb 20 Brian McCann, Luis Severino
Mar 26 Brendan Ryan, Rob Refsnyder

Of 30 teams 20 had 2 players with the same birthday.
20/30 is 0.67