LAS VEGAS — Thursday marked the first look at the rookies who will start the Nets’ rebuild.

It was more of a quick tease than particularly telling.

Four of the Nets’ record five first-round picks made their debuts, and all came with the requisite annual public service warning: Don’t make too much of summer league.

The only sure things in Las Vegas are the weather is scorching outside and the basketball sloppy inside. This was no different.