Friday, August 21, 2020 ABC 8:00 p.m. “Shark Tank” (R) 9:00 p.m. “20/20” (two hours) CBS 8:00 p.m. “MacGyver” (R) 9:00 p.m. “Magnum, P.I.” (R) 10:00 p.m. “Blue Bloods” (R) NBC 8:00 p.m. “America’s Got Talent” (R, two hours) 10:00 p.m. “Dateline” Fox: 8:00 p.m. “Friday Night Smackdown!” (two hours) CW: 8:00 p.m. “Masters of […]