Today on Google's home page, on the Google.com, is a special G vs O match between the letters of the Google Doodle. The Google logo has been transformed to promote (1) the US Open that happens not too far from me and (2) Google's live results box for the US Open tennis results.
When you click on the Google logo, you are taken to a query for [US tennis Open results] and the top results are news results, then two organic results, followed by the live results box, showing you who won and lost in the US Open.
It is a very playful doodle, I almost thought it was interactive where you would be able to play tennis on the Google logo against Google. But that is not the case.
Here is the animated version:
There aren't too many details on this version at the Google doodle page.
Forum discussion at Google+.
