Luka Dončić (age 20 years) with an amazing clutch dunk in Denver against the Nuggets to secure a 1 point lead for the Mavs a few seconds before end, but then Nikola Jokić secured the win with a buzzer beater. Luka went 26p-9a-11r, had one of his best performances, but it wasn't enough.
Source: ESPN.com