Here's the statement from Vonn's PR flack:
"Lindsey is currently in the midst of the World Cup season in Europe. Her focus is solely on competing and on defending her titles and thus she will not participate in any speculation surrounding her personal life at this time."
The USA Today piece also notes that Tiger, through his spokesman, said he would not respond to reports that he and Vonn are dating.
Well, they were both given the opportunity to deny they are dating, and neither Tiger Woods nor Lindsey Vonn took it. Does that mean anything? You decide.
(Update 3/18/2013: Tiger and Lindsey confirm they are dating.)