In tournaments won by Tiger, CBS averages 11.9 million viewers during final round coverage. In each tournament since 1997 NOT won by Tiger, viewership for the final round drops 20% to an average of 9.5 million viewers.

In 2008 and in 2007, Woods finished second, keeping Tiger and his iconic red shirt in the mix for Sunday viewing. In those years, viewership was notably higher even than when fan favorite Phil Mickelson – arguably the PGA’s second biggest star – won in 2004 and 2006.

“The NCAA Tournament is very attractive to sports marketers even in tough economic times,” said Tom Ziangas, SVP for Nielsen Sports. “The games playing out over several weeks make it a sort of mini-series for viewers. There’s always some unexpected drama or Cinderalla story – like Davidson College last year – that makes March Madness a compelling reality show as well as a prime sporting event.”

In 2008, the tournament reached nearly 100 million viewers in the US, with basketball hotbed Louisville, KY, delivering the highest ratings for a local market in the last five years.

Most Avg. Viewers, NCAA Championship Game (millions)

1979 – Mich St. vs. Ind. St. – 35.1
1992 – Duke vs. Michigan – 34.3
1993 – UNC vs. Michigan – 32.9
1994 – Arkansas vs Duke – 32.7
1983 – NC St. vs. Houston – 32.1

Top Local Market Rating, NCAA Tournament 5-year Avg.

Louisville – 19.0%
Raleigh-Durham – 13.0%
Memphis – 12.9%
Cincinnati – 12.9%
Columbus – 12.7%

March Madness On The Web

ESPN and Yahoo! were the two most-visited sports sites last March with 19.8 and 19.4 million unique users, respectively. Traffic on the CBS Sports web brand shot up 59 percent in March 2008 over the previous month. Online buzz spiked dramatically in March for last year’s Cinderella team, Davidson College. This year, there’s an additional mobile phone angle as CBS March Madness On-Demand is now available via an iPhone application as well as the desktop.

Download the Nielsen’s Guide To March Madness.

Hybrid Ads include customized ads, branded promos, vignettes, interstitials, and micro-series where sponsor messaging is combined with program or entertainment content.

Recall refers to the percentage of television viewers who can recall, within 24 hours, a hybrid ad’s sponsor.

A hybrid ad’s “recall score” is the percentage of television viewers who can recall, within 24 hours, the sponsor of a hybrid ad they were exposed to during the normal course of viewing primetime TV on broadcast and major cable networks.

Recall scores are indexed against the mean score for all new hybrid ads during the time period to calculate an ad’s “recall index.”

A recall index of 100 indicates average recall.  A recall index of 279, for example, means that a hybrid ad has proven to be about 2.8 times as memorable as the average new hybrid ad during the four-week time period.

ABC’s “Barbara Walters Special” rounded out the top three.

Overall, CBS won the night with an average audience of just over 11.3 million viewers, while ABC took second place with just over 7.4 million average viewers. FOX and NBC claimed third and fourth places with roughly 7.3 million and 5.9 million average viewers, respectively. Univision followed in fifth place with an average audience of almost 4.9 million average viewers.

CBS’s “NCIS” and “The Mentalist” rounded out the top three with approximately 18.1 and 15.9 million average viewers respectively.

Overall, ABC won the night with an average audience of almost 17.5 million viewers, while CBS took second place with just over 14.8 million average viewers. FOX and NBC claimed third and fourth places with roughly 10.5 million and 7.4 million average viewers, respectively. Univision followed in fifth place with an average audience of roughly 4.5 million average viewers.

ABC’s “20/20″ and FOX’s “Are You Smarter Than A Fifth Grader?” rounded out the top five.

Overall, CBS won the night with an average audience of just over 11.1 million viewers, while ABC took second place with almost 6.1 million average viewers. FOX and NBC claimed third and fourth places with roughly 5.7 million and 4.3 million average viewers, respectively. Univision followed in fifth place with an average audience of roughly 4.2 million average viewers.

ABC’s “Grey’s Anatomy” was sandwiched in between the two, in second place.

Overall, CBS won the night with an average audience of just over 13.7 million viewers, while ABC took second place with almost 11.2 million average viewers. NBC and Univision claimed third and fourth places with roughly 7.7 million and 4.6 million average viewers, respectively. FOX and the CW followed in fifth and sixth places with average audiences of roughly 4.6 million and 3.8 million average viewers, respectively.

CBS’s “Criminal Minds” and “CSI: NY” rounded out the top three, with 14.3 million and 11.8 million average viewers, respectively.

Overall, CBS won the night with an average audience of just over 10.8 million viewers, while ABC took second place with almost 10.5 million average viewers. FOX and NBC claimed third and fourth places with roughly 8.4 million and 6.3 million average viewers, respectively. Univision and the CW followed in fifth and sixth places with average audiences of roughly 4.8 million and 2.8 million average viewers, respectively.

NBC’s 8pm to 11:30pm coverage of the voting results claimed second place, and ABC’s 8pm to 9pm Election Night coverage rounded out the top three.

Election returns coverage on CBS, FOX, and Univision dominated the rest of the top ten.

Overall, ABC won the night with an average audience of just over 13.2 million viewers, while NBC took second place with almost 12.5 million average viewers. CBS and FOX claimed third and fourth places with roughly 7.4 million and 4.7 million average viewers, respectively. Univision and the CW followed in fifth and sixth places with average audiences of roughly 4 million and 2.4 million average viewers, respectively.