Joan Beringer is in that pivotal NBA Summer League spot between his first and second NBA seasons.It's time for him to dominate in a Minnesota Timberwolves to carve out a rotation spot when the season arrives.So far, so good.Beringer put up 18 points, 11 rebounds and 4 blocks on Thursday night in a Summer League-opening win in Vegas for the Timberwolves.MORE: Bronny James' best future doesn't involve a trade from LakersHe shot 7-for-15 from the floor, so not perfect, but everything else he did had quite the impact on the game.This is likely, at least in part, what the Wolves wanted to see from Beringer.It was always pretty clear he'd protect the rim. If he scores the ball, too, Minnesota will benefit greatly.This has also been a fascinating offseason for the frontcourt in Minnesota. Julius