Allen Iverson was on his way to Denver to join the Nuggets for his debut tonight, but a few obstacles stood in his way: airport trouble, snow-covered roads and conditions of the trade involving the four-time scoring champion.

"We really don't know," said Mark Warkentien, Denver's vice president of basketball operations. "There are still a lot of variables."

Iverson's plane was supposed to touch down in Denver three hours before tipoff in the game against the Sacramento Kings.

Iverson still has to undergo a physical and Andre Miller and Joe Smith have to report to Philadelphia and take physicals as well. Ivan McFarlin, who was also acquired by Denver in the trade Tuesday with the 76ers, doesn't factor into the equation since Denver has waived the physical requirements for him.

"Hypothetically, if A.I. and Andre pass their physicals and Joe doesn't, nobody can play," Warkentien said.

There's a time limit as well. Iverson has to report and clear his physical an hour before the game. That's when the active roster is due.

However, the game time may be pushed back since Sacramento is having trouble arriving into town. Denver International Airport has been closed the last two days due to a blizzard, and just recently reopened today.