Philadelphia's Australian rookie Ben Simmons sent shivers through the first NBA coach he faced.

Basketball fans have had to wait patiently to see what Ben Simmons is capable of on an NBA court, but his opening showing in pre-season suggests it could be more than worth it.

BIG-TIME TALENT: Former Newcastle Hunters junior Ben Simmons created a dazzling first impression for Philadelphia in a pre-season game. Picture: AP

BIG-TIME TALENT: Former Newcastle Hunters junior Ben Simmons created a dazzling first impression for Philadelphia in a pre-season game. Picture: AP

Philadelphia's Australian rookie sent shivers through the first NBA coach he faced.

"Oh my God," Memphis Grizzlies coach David Fizdale said of Simmons.

"I don't want to see that for the next 15 years."

The 21-year-old, 208cm tall Simmons was sensational in the opening minutes of his debut NBA pre-season game against the Grizzlies on Wednesday.

He scored his first basket nine seconds into the game, added the 76ers' second basket less than a minute later and dished out five assists in the first quarter.

The Grizzlies won 110-89 and Simmons missed four of six field goal attempts for the game, but his six points, seven rebounds, nine assists and one block from 21 minutes on the court had Fizdale fearful of how good the Australian will be.

"That kid – they're not talking about him enough," Fizdale said.

"The way he moves with the ball, his ability to see the floor, the way he can get places on the floor.

"I think once he gets confidence in his shot where you really have to close in on him to the three [point-line], wow.

"I mean, he's a big-time talent."

The 76ers play Boston in their second pre-season game on Friday and open their regular season against Washington on October 18.

*  Melbourne overcame Adelaide 99-97 in a gripping NBL season opener on Thursday night. Trailing 31-18 shortly after quarter-time, United exploded with a 40-point third term. "Winning on the road, winning ugly, we'll take it," United coach Dean Vickerman said.

"This team only got four wins on the road last year.”

Adelaide coach Joey Wright said his side penalty for lapses in the second and third quarters.

"We just gave them too many opportunities in that second quarter," he said. "We had a couple of breakdowns on our defence and had a few turnovers.

"Then the third quarter we just gave them way too much - 40 points.

"A total of 23 offensive rebounds in a game and you lose by two, it hurts."

Casper Ware stepped up spectacularly following a scoreless opening quarter to finish with 23 points, eight rebounds and six assists, while ex-Perth Wildcat and fellow American Casey Prather (20 points, six boards) showed his class in his first outing for his new side.

Nathan Sobey (21 points, nine rebounds) was Adelaide's best, especially early, while substitute Anthony Drmic (17 points, including 15 in the second half) provided perimeter firepower off the bench.

With Sobey active early and new import Shannon Shorter proving a handful, the 36ers, employing a high-tempo, fast-breaking style, held sway 27-18 at quarter-time.

The margin swelled to 13 points early in the second before United, who looked out-of-sync early, found their groove. Held scoreless in the opening term, Ware collected 11 second-quarter points, including a banked three-pointer on the halftime buzzer to slice the gap to 47-45 at the long break.

Red-hot Ware opened the second half with three triples on the trot to give Melbourne the advantage, the visitors moving ahead by 10 at three-quarter time.

The Sixers valiantly ate into the deficit and applied the defensive clamps in the final term but when Drmic's three-pointer with seven seconds to go missed its mark, Melbourne was relieved.