Jackie Robinson Day is also the final day of the inaugural Trailblazer Series. The Trailblazer Series is the first ever program hosted by Major League Baseball to celebrate and promote girls baseball. In a time when girls are often shunted into softball once baseball becomes competitive, it’s significant that MLB is promoting baseball as an option for young girls. Some 100 girls from 20 states and Canada were invited for three days of lectures, interaction with coaches and players in women’s baseball, and of course, actual baseball. And to play with only girls, when many of the participants have no choice but to play with boys at home, is a huge thing. The girls will also participate in Jackie Robinson Day festivities at Dodger Stadium to close out their weekend.