None of the corporations that use Tiger Woods as their pitchman have dumped the disgraced golfer since his extramarital dalliances made headlines— at least publicly. But new data from Nielsen Co. reveals that ads featuring Woods vanished from prime-time broadcast television and cable channels following reports of his extramarital affairs. The last prime-time ad featuring the 33-year-old golfer was a 30-second Gillette Co. spot on Nov. 29, two days after he crashed his car outside his house. One of the commercials pulled from the schedule was one for Pac-10, a college athletic conference, due to be shown on ESPN on Thursday. The promotional spot hailed him as an “inspiration” and “an influential figure both on and off the golf course.” A Pac-10 spokesman said: “I don’t know when, or if, it will be used again.” Yesterday, Gatorade, which signed a $100 million, five-year deal with Woods in 2007 became the first brand to drop a Woods product when it announced its Tiger Focus drink, launched in March 2008, will be discontinued.