Roger Federer played tennis against world champion skiier Lindsey Vonn atop a glacier in the Swiss Alps recently.
How does something like that happen? Well, The Buzzer reports that it all began when Vonn challenged Federer to a match over Twitter. The tweet begat a video call which is when Swiss chocolatier Lindt got involved and set up a court on a glacier, because that is where tennis is best experienced.
The two arrived to the match on a massive snowcat, and Vonn did pretty well, even winning a few points off the 17-time major winner (when he was not allowed to leave a small circle on the baseline).
Maybe it would be a more equal match if Fed had skis on.