Darius Morris is a 3 year veteran of the NBA. He spent his first 2 years on the Los Angeles Lakers. However, he regressed after his first season, and wasn't re-signed. This past year, he floated around the league for the first half of the year, but by All-Star break he was out of the league.
Coming into summer league, he still had to prove that he was worthy of a spot in the NBA, and so far, he's done well towards reaching that goal. Through 3 games, Morris has averaged 12.3 ppg on 56%, and averaged 3 assists and rebounds. Of course, three games in, on only 22 minutes per game, is an extremely small sample size. But, this quick start has been enough to garner some notice around the league.
Morris fits well enough into what the Spurs have done so far this summer. He's a good ball-handler, and has been extremely aggressive in pick-and-roll to get to the rim and finish. He's a bigger guard, at 6-5, 195, so he won't be out-physicaled on defense. The biggest problem for Morris is his long distance jumper, but he's minimized his weakness so far by not taking many threes. (He's taken 1 per game, making 1 total.)
Looking at his future with the Spurs, well, there probably won't be much of one. He may get a training camp invite in August, but the Spurs already have 14 players signed, and they have extended a qualifying offer to Aron Baynes, so Morris' chances of making the team are slight. But because the pick-and-roll is such a huge component of most NBA offenses, his proficiency in may warrant him a legitimate shot at an NBA roster spot down the road.
I know that on most occasions, fans can dismiss whatever happens this week with a snarky "It's just summer league" type of comments, but there are a lot of guys like Morris out there fighting for their careers, if not in the NBA, then overseas. They may not mean anything for standings, and the record books won't even list them, but guys who play this well to find a second chance at a career give us a reason to cheer.
Hopefully, for his sake, Morris can keep his good production up.