The Medford Recreation Department has added a fourth film to its summer outdoor movie series, presenting  “A League of Their Own” at Tufts Park. The movie will begin at 8 p.m., but come an hour earlier as the Rec Department will have music and lawn games set up in the field, along with free popcorn. Please bring a blanket, drinks (no alcohol permitted), and bug spray. The final movie presented in the series will be “Hook” on Friday, August 19, at Wright’s Pond.