Jen Pawol is set to make history as the first female umpire in more than 150 years of Major League Baseball. She received the long-awaited call while in her hotel room in Nashville, Tennessee, and will debut Saturday during Miami’s doubleheader at Atlanta. Pawol, who began her umpiring journey in high school, has worked more than 1,200 minor league games. She expressed gratitude for the support of her predecessors and colleagues. Pawol will join Chris Guccione’s crew in Atlanta, where she expects to have about 30 family and friends in attendance.