Standing upright didn’t give John Wall the same problems on Saturday as it did the previous night, when he developed back spasms after attempting to take a charge in the second half of the Washington Wizards’ 109-102 loss to the Philadelphia 76ers.

After scoring a team-high 26 points — but only three after halftime — Wall received treatment after the game and moved gingerly through the locker room, clutching for his lower back and groaning in agony.

Coach Randy Wittman kept his point guard out of practice to rest and recover but it didn’t make much difference. Walking toward the parking garage at Verizon Center, Wall was asked if he was feeling any better and shouted, “Hell no!”

Wall then reached for his back and grimaced.

The Wizards find themselves in a precarious situation as they prepare to face the two-time defending champion Miami Heat on Sunday at American Airlines Arena. Not only are they 0-2 for the fourth straight year after blowing a 12-point second-half lead in their home opener, but the Wizards also might be without Wall and Nene.

Nene has been sidelined with a strained left calf and sore Achilles’ tendon since Wednesday’s’ season-opening loss at Detroit. He was limited to running on a treadmill and light, non-contact drills in practice.

Wittman didn’t want to speculate on the availability of Wall or Nene after assuming that he’d have his big man Friday — until he showed up for introductions wearing a suit.

“That happens in basketball. You’re not going to be up at full strength all the time,” forward Trevor Ariza said. “If you can’t go, you have other players that are more than capable of playing.”

That doesn’t always apply to the absences of Wall and Nene. Last year, the Wizards lost their first nine games and were 0-11 overall last season with the duo sidelined.