Ever wonder what that “13” on the left field wall of UCLA's Jackie Robinson Stadium is?

Jackie Robinson Stadium controversy - Timelines - Los Angeles Times

Jackie Robinson Stadium controversy - Timelines - Los Angeles Times

Jackie Robinson Stadium controversy - Timelines - Los Angeles Times

JACKIE ROBINSON STADIUM - 68 Photos & 17 Reviews - 100 Constitution Ave, Los Angeles, California - Stadiums & Arenas - Phone Number - Yelp

Jackie Robinson Stadium - Brentwood - 5 tips

JACKIE ROBINSON STADIUM - 68 Photos & 17 Reviews - 100 Constitution Ave, Los Angeles, California - Stadiums & Arenas - Phone Number - Yelp

42 facts about Jackie Robinson to celebrate the 75th anniversary of his breaking the color barrier

JACKIE ROBINSON STADIUM - 68 Photos & 17 Reviews - 100 Constitution Ave, Los Angeles, California - Stadiums & Arenas - Phone Number - Yelp

DFA 1 Passages Questions - Read the passage - Jackie Robinson Breaks the Color Barrier - and answer the question below: Jackie Robinson Breaks the

Ballparks Around The World: Jackie Robinson Stadium

Jackie Robinson Stadium controversy - Timelines - Los Angeles Times

Better Know A Regional: Jackie Robinson Stadium - And The Valley Shook

Photo, Jackie Robinson stadium salutes veterans

JACKIE ROBINSON STADIUM - 68 Photos & 17 Reviews - 100 Constitution Ave, Los Angeles, California - Stadiums & Arenas - Phone Number - Yelp

Jackie Robinson Stadium - Brentwood - 5 tips