Speed Chess Championship: The Grand Finale
I remembered that it was scheduled for after the Carlsen-Caruana match, but didn't remember that it was so soon afterward. The (Chess.com) 2018 Speed Chess Championship took place November 30 through December 2, and it was won by...well, I won't tell you here - if you want spoilers, check out the comments section. What I'll do here is provide some links:
Semifinal 1: Wesley So vs. Jan-Krzysztof Duda: Video here.
Semifinal 2: Hikaru Nakamura vs. Levon Aronian: Video here.