MIAMI — With fewer than three weeks left before their Sept. 29 start of training camp, the Miami Heat have largely answered their offseason questions, with limited flexibility ahead of the Oct. 21 start of their 39th regular season.

But that doesn’t mean there won’t be competition from within, as well as doors open for roster optionality during the course of the season.

With 14 of the maximum 15 roster spots filled, the Heat currently have the wherewithal to fill that 15th spot below the hard cap created by the machinations to acquire Giannis Antetokounmpo.

But there also could be benefit in putting that $2.6 million (enough for a veteran minimum) on hold to utilize on a potential buyout player or in a trade. That number could move in excess of $4 million in such space if the Heat do not go beyond the $500,000 guarantee current in place on the contract of forward Myron Gardner.

While the Heat do not have a de facto depth chart — this is a team that declines to even reveal their starting lineup until 30 minutes before tip-off — a depth chart seemingly has taken shape organically.

Center

1. Bam Adebayo

2. Nick Richards

3. Vlad Goldin*

Rotation reality: The question is whether Erik Spoelstra even will utilize a backup center with a healthy rotation. More likely are minutes when Antetokounmpo moves to center, or even minutes when Bobby Portis or Nikola Jovic are the biggest players on the court.

With Richards, it could be a case when his playing time comes when others are injured, including spot starts in place of a sidelined Adebayo.

Available options: In signing Richards, the Heat bypassed big-man reunions with Kevin Love and Kelly Olynyk, among others. But keep in mind that Richards’ contract is not guaranteed until opening night, allowing for a fluid evaluation process during the preseason.

Power forward

1. Giannis Antetokounmpo

2. Bobby Portis

3. Nikola Jovic

4. Keshad Johnson*

Rotation reality: With a coach who continually has leaned toward smaller ball, the power rotation could boil down to Adebayo, Antetokounmpo and Portis on most nights, allowing for ample spacing from the team’s shooters.

Jovic, like Richards, will have to earn his way in, which could come down to specific matchups and the need for size.

Available options: Outside of trade options down the road, it is more likely Keshad Johnson gets the opportunity to earn his way back to a standard deal then the Heat turn to the few remaining unsigned power players.

Small forward

1. Andrew Wiggins

2. Pelle Larsson

3. Simone Fontecchio

4. Myron Gardner

Rotation reality: Like Adebayo and Antetokounmpo, Wiggins seems locked in to this starting role. The question becomes whether there is more time at forward for Pelle Larsson as a means to feature both Klay Thompson and Tim Hardaway Jr. at shooting guard.

The closing lineup very well could feature both Wiggins and Larsson, particularly if the Heat are plating from the lead.

Available options: At this point, the Heat are more likely to see what they have (or don’t have) in Gardner before the guaranteed portion of his contract runs out in December.

Shooting guard

1. Klay Thompson

2. Tim Hardaway

3. Ryan Conwell

Rotation reality: Thompson sets up well in a starting lineup where he can be surrounded by four of the team’s best defenders. That also allows Hardaway to remain in a comfort zone in reserve.

Larsson should get plenty of minutes at guard, with Conwell possibly to shoot himself into playing time.

Available options: There are ample veteran options still on the market, most notably Bruce Brown, John Konchar, Victor Oladipo, Ochai Agbaji, even Cam Thomas. But a reach for experience is likely to come on the buyout market, or at least later in the season.

Point guard

1. Davion Mitchell

2. Dru Smith

3. Tre Donaldson*

Rotation reality: The Heat have said plenty of nice things about Dru Smith over the years, but would they feel as comfortable about starting Smith for an extended period if Mitchell were to be lost to an injury.

Of the three players on two-way contracts, Donaldson arguably could wind up with the best case to eventually be moved up to a standard deal.

Available options: Gabe Vincent remains available for a reunion and there could be something to be said about a non-guaranteed camp invite, if he were to be amenable. A Grizzlies buyout of D’Angelo Russell could also open a door for veteran depth at the position.

* — Two way contract (eligible to be on active roster for only 50 of the 82 regular-season games; do not count against the salary cap, luxury tax or hard cap).