OKAY ITS OFFICIAL MY DAD JUST ASKED @rogerfederer IF TENNIS BALLS ARE YELLOW OR GREEN AND HE SAID THEY ARE YELLOW pic.twitter.com/EXdXRr0oFa
— Delaney Dold (@delaneyanndold) March 19, 2018
What color is a tennis ball? Green or yellow? https://t.co/6UdE3mNMwA pic.twitter.com/YeEfTFPm1D
— Scripps National (@ScrippsNational) March 21, 2018