There's a report on it here, while if you, like me, haven't seen it yet and would rather watch it "live" without knowing the result, you can watch the on-demand video here. Somehow I managed to dig up those links without seeing the result of the match, which took place on Tuesday, so I'll let you find out for yourself.
This is part of an eight-player knockout event on Chess.com, and I reported last month on another of the quarterfinal matches, Alexander Grischuk's win over Levon Aronian. Somehow I missed last week's match between Hikaru Nakamura and Pentala Harikrishna, so I'll have to dig that one up as well. (Don't tell me what happened, even if it's extremely likely that Nakamura was the victor!) The last of the quarterfinal matches will see Magnus Carlsen take on the winner of a qualifying tournament, making this probably the strongest blitz tournament (by average rating) in chess history.
UPDATE: It would be hard for the commentators of the match between Maxime Vachier-Lagrave and Fabiano Caruana not to say what happened in the Nakamura-Harikrishna match, so I decided to find (and hopefully watch) that one first. If you also don't want to spoil the drama, you can watch that one here.