As "America's favorite pastime," perhaps no sport has chronicled the rise of an immigrant nation like baseball. From German-American parents came Babe Ruth, Italian-Americans proudly point to Joe DiMaggio, and Jackie Robinson shattered the color barrier for African Americans that had kept them out of the game since the 1880s. Certainly, almost every Jewish baseball fan knows the names of Hall of Famers Hank Greenberg and Sandy Koufax, but Jews have played professional baseball in the United States since the earliest days of the sport. Indeed, over 160 Jews are known to have played...