MLB will donate all royalty payments from the sales of specialty caps and uniforms to the Prostate Cancer Foundation and Stand Up To Cancer. During this weekend's games, blue compression sleeves, blue batting gloves, blue footwear, blue wrist/elbow/leg guards and catcher's equipment can also be used.
Players and on-field personnel have been wearing blue ribbons and blue wristbands on Father's Day since MLB first partnered with the Prostate Cancer Foundation in 1996. This is the first year that MLB is also using a blue-stitched Rawlings baseball, as the official game ball.
Another added source of fundraising this year is the annual Prostate Cancer Foundation "Home Run Challenge," which gives fans the opportunity to make a one-time monetary donation for every home run hit by their favourite MLB clubs from June 1 through Father's Day, June 18.