NBC

One of the earliest and most famous examples of the "Friday Night Death Slot" phenomenon was the original Star Trek on NBC.^[6]

The second season of Star Trek aired on Fridays from 8:30–9:30 p.m. (Eastern Time). Although NBC discussed plans to move it to a 7:30–8:30 p.m. slot on Mondays for mid-season, that never occurred. The poor ratings in the time slot affected the show after it, Jerry Van Dyke's sitcom Accidental Family, leading to its failure after less than a season^[7] and angering Van Dyke, who was desperate for a hit and openly (but unsuccessfully) campaigned for NBC to give the show a better time slot.^[8] After Star Trek fans deluged NBC with a mail-in protest, producer Gene Roddenberry stated that he was promised the same 8:30–9:30 time slot for Season 3, but airing on Monday instead of Friday. However, that would have meant Rowan & Martin's Laugh-In had to start a half-hour later (moving from 9:00 to 9:30). Laugh-In producer George Schlatter saw no reason why his show, which was a ratings smash at the time, had to yield its slot to the poorly rated Star Trek, and he made no secret of his displeasure.^[9] Star Trek instead remained on Fridays, moving to the even less desirable 10:00 p.m. timeslot (one that had been used mainly for filler and throwaway documentaries the previous season). Roddenberry lamented, "If the network wants to kill us, it couldn't make a better move."^[6]

The following are examples of NBC shows that started on Friday nights and lasted for a few episodes, or were moved to Friday nights, lost the battle for television ratings, and were eventually canceled:

CBS

CBS was the most successful network on Friday nights in the 1980s due to their hit shows Dallas and Falcon Crest, but both shows were struggling by the end of the decade and were cancelled in the early 1990s. In an effort to revive Friday night television in the 1990s, and to compete with ABC's successful TGIF block of family comedies airing opposite it, CBS first attempted to compete with ABC launching a comedy night in the fall of 1992 with The Golden Palace (a spin-off/continuation of NBC's The Golden Girls), Major Dad and Designing Women, along with a new sitcom from Bob Newhart, Bob.^{[citation needed]} The Golden Girls had been a top-10 hit on Saturday nights for NBC (though it had fallen to 30th in its final season), while Major Dad and Designing Women had also been top-10 hits on Monday nights, and Newhart's previous sitcom, Newhart, had spent most of its run in the top 30. Nevertheless, this effort failed, and only Bob was renewed for the 1993–1994 season, only to end in December 1993.^[10] A later effort to counterprogram TGIF, the CBS Block Party (which included former TGIF series Family Matters and Step by Step, both of which were hits for several years while on ABC before both shows were canceled in 1997), met a similar fate in the fall of 1997.^[11]

In 2013, CBS moved Vegas to Friday nights to make room for Golden Boy, another police drama. Both shows were eventually cancelled during their first year.

In general, however, CBS has found ways, particularly in the years following the cancellation of the Block Party, to be at least somewhat more successful in the Friday night time slots than its broadcast competitors.^[12][13]

The following are all examples of CBS shows that either started on Friday nights and lasted a few episodes, or moved to Friday nights, lost the battle for television ratings, and were eventually cancelled:

CBS has aired MacGyver, Hawaii Five-0 and Blue Bloods in that order on Friday night between 2016 and 2020.

ABC

TGIF was a successful block for ABC, which ran from 1989 to 2000 (although the network had been running a sitcom block on Fridays beginning in 1987); it focused primarily on family-friendly sitcoms. The network had also had success with a block featuring The Partridge Family and The Brady Bunch in the same time slots during the early 1970s. Following the slow collapse of TGIF in the late 1990s, Friday night has fallen into a lower priority for the network. The following are examples of ABC network shows that started on Friday nights and lasted a few episodes, or were moved to Friday nights, lost the battle for television ratings, and were eventually canceled:

In September 2018, ABC cleared the 9:00 p.m. Eastern time slot on Friday nights to make room for the expansion of 20/20 to two hours as a result of ABC News changing the program's format to include true crime stories in an attempt to address the program's declining viewership.

Fox

Perhaps the network which has received the most attention and has become the most well known for the "Friday Night Death Slot" has been Fox.^[21]

The following are all examples of Fox shows that either started on Friday nights and lasted only a few episodes, or were moved to Friday nights, suffered from dismal ratings, and were eventually canceled.

In January 2011, the sci-fi drama Fringe, then in its third season, was moved into this slot from Thursdays. According to Fox Entertainment President Kevin Reilly, nearly half of Fringe's viewership time shifts the show to watch at their convenience, and that "if it does anywhere near what it did on Thursdays, we can glue that show to the schedule because it can be a big win for us".^[33] The Fox network created a promotional advertisement for Fringe that lampooned its reputation of the Friday night death slot prior to Fringe's move.^[34][35] Despite encountering lower ratings after its move, Fringe was renewed for a fourth season,^[36] and later for a shortened final fifth season to allow the creators to complete the story arc they had set out at the start of the program as well as to reach 100 episodes, allowing the show to be resold in syndication. Critics praised Fox for taking the risk and profit lost on the show to satisfy the creators' desires and fans' requests to complete the show's primary story.^[37] The series finale aired on January 18, 2013.

After 20 years of unsuccessfully trying to find programming to fill the Friday night death slot, Fox gave up, leaving a one-hour empty hole on that night in the 9:00 p.m. (Eastern Time) hour for the 2013–14 schedule. Encores of Fox programming from the previous week originally aired in that timeslot. However, in November 2013, in the hopes of revitalizing Fox's Friday ratings, the sitcom Raising Hope moved from Tuesdays to Fridays for its fourth season, airing in the 9 p.m. half-hour; the freshman sitcom, Enlisted premiered in the 9:30 p.m. slot before both series swapped timeslots in late January. This "encore slot" was made a permanent part of the schedule for the 2014–15 season. Fox did not include such a slot in 2015–16, but the show chosen to fill the 9:00 p.m. time slot was the low-budget panel game World's Funniest Fails.

In October 2019, Fox cleared its Friday night time slots to make way for WWE SmackDown, which ran on the network until 2024,^[38] after which USA Network will take over the show.^[39]

The WB

Other networks

WWF SmackDown! was first broadcast on UPN on Thursdays to compete with WCW Thunder (eventually forcing Thunder to Wednesdays because of high ratings for SmackDown!, before a majority of the assets belonging to WCW were ultimately purchased by Vince McMahon in 2001). UPN moved the show to Friday nights in the United States on September 9, 2005, because of low ratings in its original Thursday night slot, and the show retained its Friday night time slot after moving to The CW in September 2006. Upon its move to the "death slot," UPN/The CW Friday nights saw a substantial increase in ratings over UPN's movies and most of The WB's sitcoms. SmackDown! had also initially garnered even better ratings in the death slot than the ratings on its former Thursday night airings (after WCW was bought by the WWF in 2001). Despite this, The CW chose not to renew SmackDown's contract in 2008 due to the change of the demographic of the network's viewers (shifting more towards women 12–34 years of age), and the show moved to MyNetworkTV that fall,^[40] eventually leaving network television altogether with a move to Syfy in 2010. SmackDown then moved to the USA Network in 2016, thus sharing the same network as WWE's flagship show, Raw. As previously noted, the show moved to Fox and return to Friday nights in 2019.

UPN also moved Star Trek: Enterprise to Friday nights^[17] at the start of its fourth and final season in 2004. UPN was subject to heavy sports pre-emptions by local affiliates on Friday nights in the Major League Baseball, high school football, and NHL/NBA seasons, pushing it to late night. A good number of viewers thus chose to watch the show's weekend repeat whenever it was offered by their UPN affiliate, though the network and the show's Internet fanbase heavily discouraged watching it, as it was an unrated airing by Nielsen.

In recent years on The CW, Cedric's Barber Battle fell victim to the Friday night death slot, only airing 8 episodes out of the 10 produced before being pulled off the schedule completely.