When the CW first came together, Friday wasn't much of a problem; they simply threw on the solid-rated WWE's Smackdown! franchise, which UPN had moved to Friday starting in 2005. The CW parted with that franchise two years later, and it may have been a good financial decision, but from a ratings standpoint the night has (almost) never been the same since. Smallville and Supernatural both cycled through the night for a couple years and actually made Friday one of the network's best nights (especially the year they aired together), but otherwise Friday has been a dumping ground for repeats and low-priority stuff.
WB Friday
8:00 | 8:30 | 9:00 | 9:30 | Avg | |
2001-02 | Sabrina the Teenage Witch | Maybe It's Me | Reba | Raising Dad | 30 |
29 | 25 | 38 | 28 | ||
27 | 33 | ||||
2002-03 | What I Like About You | Sabrina the Teenage Witch | Reba | Greetings from Tuscon | 32 |
29 | 29 | 40 | 29 | ||
29 | 34 | ||||
2003-04 | Reba | Like Family | Grounded for Life | The Andersons | 31 |
38 | 28 | 31 | 27 | ||
33 | 29 | ||||
2004-05 | What I Like About You | Grounded for Life | Reba | (repeats) | 32 |
28 | 30 | 44 | 26 | ||
29 | 35 | ||||
2005-06 | What I Like About You | Twins | Reba | Living with Fran | 29 |
26 | 29 | 34 | 26 | ||
28 | 30 |
UPN Friday
8:00 | 8:30 | 9:00 | 9:30 | Avg | |
2001-02 | (movies) | 24 | |||
24 | 24 | ||||
2002-03 | (movies) | 17 | |||
17 | 17 | ||||
2003-04 | (movies) | 19 | |||
19 | 19 | ||||
2004-05 | Enterprise | (repeats) | 25 | ||
32 | 18 | ||||
2005-06 | Friday Night Smackdown! | 36 | |||
36 | 36 |
CW Friday
8:00 | 8:30 | 9:00 | 9:30 | Avg | |||
2006-07 | Friday Night Smackdown! | 39 | |||||
39 | 39 | ||||||
2007-08 | Friday Night Smackdown! | 42 | |||||
42 | 42 | ||||||
2008-09 | Everybody Hates Chris | The Game | America's Next Top Model Fall (R) | 21 | |||
21 | 25 | 18 | |||||
23 | |||||||
2009-10 | Smallville | America's Next Top Model Fall (R) | 27 | ||||
36 | 18 | ||||||
2010-11 | Smallville | Supernatural | 40 | ||||
42 | 39 | ||||||
2011-12 | Nikita | Supernatural | 26 | ||||
21 | 31 | ||||||
2012-13 | Nikita | America's Next Top Model Fall | 20 | ||||
16 | 24 | ||||||
2013-14 | The Carrie Diaries | America's Next Top Model Fall | 20 | ||||
16 | 23 | ||||||
2014-15 | Whose Line Is It Anyway? | America's Next Top Model Fall | 27 | ||||
32 | 22 | ||||||
Avg | 30 | 28 | 29 |
2014-15 Update: The real interest on the CW Friday in 2014-15 was the winter run of Hart of Dixie (24), which somehow was actually up in raw numbers from the previous mostly-Monday season. They're gonna hope for a similar miracle from CBS Studios survivor Reign, which averaged just a 23 in the post-Vampire Diaries slot last year.
See here for more explanations/disclaimers about Schedules Plus.