Luka Dončić (age 17.7 years) playing against Victor Oladipo and Russel Westbrook during a preseason game against Oklahoma City Thunder in Madrid. Luka played 18 min and had 3p-4a-5r. According to some report he asked Madrid's coach Lasso to assign him guarding Westbrook, who only had 18p-4a-3r-3s. The best player on OKC was Oladipo with 34p, but the man of the game was Luka's idol Sergio Llull with 22p-9a-4r and a clutch 3P that brought the game to overtime, which eventually helped Madrid beating Oklahoma 142:137 (see the full boxscore).
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Source: TheSmokingCuban.com