Count Royals first-base coach Rusty Kuntz as a supporter of the initiative. Kuntz encourages all men to get screened for prostate cancer, as well as other cancers.
"Doctors are there to save your lives," Kuntz said. "Let them do their jobs. Go get screened."
Royals manager Ned Yost also is a big fan of Major League Baseball's efforts in this area.
"We get tested every spring," Yost said. "I'm glad for that."
The uniforms incorporate a different hue of blue from the Royals' blue into the logos and caps, which have a blue shadow tech heather crown and graphite visor.
MLB will again donate all royalty payments from the sales of specialty caps and jerseys to the Prostate Cancer Foundation and Stand Up To Cancer.
Also, for Father's Day, MLB.com, all 30 clubs and broadcast partners will express their gratitude by sharing their favorite baseball moments of dad on social media using #MLBDads, and fans are encouraged to do the same.
Jeffrey Flanagan has covered the Royals since 1991, and for MLB.com since 2015. Follow him on Twitter @FlannyMLB. This story was not subject to the approval of Major League Baseball or its clubs.