Somewhat OT, take a look at the results of the 200m race from the 1936 Olympics. The silver medalist behind Jesse Owens is Jackie Robinson's older brother Mack, himself an accomplished athlete, though obviously not as high profile as either Owens or his younger brother.

What I'm curious about is when did sports in other countries become more integrated. I am of course familiar with Jackie Robinson and Larry Doby in baseball, but what about other sports in other countries?