Best rookies, best vets, most disappointing in summer league

Mavs rookie Dennis Smith Jr. has had his way at the Vegas Summer League. Garrett Ellwood/NBAE via Getty Images

Which players have been most impressive so far at the NBA summer league in Las Vegas? Whose careers have gotten off to slow starts?

We're midway through summer league action, with the tournament portion of the competition beginning Wednesday. With each team having played three games -- and some of the big names already shut down for the remainder of the competition -- now is a good time to take a preliminary look at the most impressive (and most disappointing) players in Las Vegas.

Best rookies