WTAE-TV
Although it was the only ABC affiliate in the region when it signed on at the time, WTAE-TV also pre-empted and/or delayed a handful of ABC programs, most notably some of its daytime lineup from the 1960s to the late 1990s. WTAE-TV did not begin running "Good Morning America" until December 1978, and only aired an hour of the program until 1980. "One Life to Live" did not run on WTAE-TV from its 1968 debut up until 1978, when the soap opera expanded to an hour-long format. From 1969 to 1971, and again from 1974 to 1979, ABC shows that were not broadcast on channel 4 ended up airing instead on WPGH-TV. After 1980, some of these shows ran on WPTT (channel 22, now WPNT). WTAE-TV also preempted the Sunday morning ABC children's programming block the entire time ABC offered it, as well as a couple of hours of ABC's Saturday morning cartoons until 1979. WTAE-TV ran syndicated cartoons in place of the network-supplied children's programs, while the pre-empted Saturday morning network programs (including "American Bandstand") aired on WPGH during that time.
One Life to Live
Starting July 15, 2013, OWN began a 10 week trial run of both "One Life to Live" and "All My Children" on its daytime lineup. Episodes of "One Life to Live" are broadcast at 1:30 P.M., following "All My Children" which airs at 1:00 P.M., Mondays through Thursdays.