Harden is in a groove with the Nets as they head to face his former Rockets team, which is struggling.

The Nets haven’t achieved anything substantial yet. Kevin Durant, Kyrie Irving and the newcomer in their star trio, James Harden, haven’t even played 200 minutes together yet.

As flammable as the new Nets have looked at their best, in such an inviting Eastern Conference, what we’ve seen so far does not assure the three alphas and their rookie coach, Steve Nash, of meaningful future success.

One notable exception: Harden’s return to Houston on Wednesday, 50 days after his last game there, is certain to be triumphant.

Entering his first visit to Toyota Center since the weekslong mutiny he staged to persuade the Rockets to trade him, with his former team in the throes of a relentless losing streak, Harden appears reinvigorated, almost reborn, in the wake of the divorce. That was evident on Monday night in San Antonio, where Harden racked up 30 points, 14 rebounds and 15 assists — without a turnover — in an overtime victory against the Spurs.

“He can literally do almost everything there is to do out there,” Nash said.

Harden has been on his best behavior as a Net, embracing a much more watchable share-the-ball approach with a vigor some skeptics thought he no longer had at age 31. The result: Harden’s reputation has rebounded dramatically, with a swiftness and flair few predicted when the Rockets shipped him to Brooklyn in mid-January.