Luka Dončić (age 20.8 years) battling with Damian Lillard at home in Dallas against the Portland Trailblazers. The Mavs lost by 2 pts at the end (121-119) on a very bad shooting night (see full box score). Luka went 29p-9a-12r-3s in the game, but it wasn't enough.
Source: Mavs Moneyball