In March 1991, KTLA was the first station to air the infamous video of Rodney King's beating by three Los Angeles police officers, whose eventual acquittal sparked rioting within the city in 1992. In July 1991, KTLA debuted the Los Angeles market's first live, local morning two-hour newscast, the "KTLA Morning News", to compete with the network morning shows on KABC-TV (channel 7), KCBS-TV (channel 2) and KNBC (which each started at 7:00 a.m., as KTLA's program initially did). The program suffered from low ratings at first; however, the ability to cover breaking news live (as opposed to the network morning programs, which were aired on a three-hour tape delay) attracted more viewers to the program. As time went on, the "Morning News" has enjoyed great ratings success, generally ranking number one in its main 7:00–9:00 a.m. time period. The program's success spawned rival KTTV to launch its own morning newscast, "Good Day L.A.", in 1993. From 1994 to 1995, the station aired gavel to gavel coverage of the O. J. Simpson trial anchored by Marta Waller (this coverage was rebroadcast by other stations such as Portland, Oregon WB affiliate [and future Tribune sister station] KWBP (now KRCW-TV)).