The ABL announced last month that the start of the campaign would be pushed back from mid-November to "mid-to-late December".

But the season has now been abandoned altogether with Baseball Australia chief executive Glenn Williams claiming it was the "right decision" for the long-term success of the league.

"There is still too much uncertainty around Australia's ongoing COVID restrictions for us to be able to operate a successful ABL season," said Williams.

"We know how much the ABL means to our fans, players, coaches, officials and the wider baseball community and we exhausted all options to try and find a way to conduct a sustainable season, but we couldn't find a way through.

"This is understandably disappointing, but we are confident this is the right decision and in the best long-term interests of the ABL and its teams."

Australia has imposed strict border controls and snap lockdowns in a bid to combat COVID-19, but is struggling to contain the Delta strain of the virus as cases continue to increase across the country.

Perth Heat general manager Steve Nelkovski said the ABL's decision to cancel the season was difficult to take as he fears it will have a "significant" financial impact.

"It's a really tough pill to swallow," said Nelkovski in a report by The West Australian.

"We were presented a couple of options late last week, in regards to an updated schedule and, this week, the season has been cancelled.

"We were confident the season was going ahead a week ago.

"We had dinner with our players, we told them to be ready for December 10.

"Financially, the impact is significant and will be significant for years to come.

"There's been a huge investment back into the brand and organisation over the last three years to get us to this point.

"Along with that, it's player development and the next generation of young kids who don't get to be inspired by seeing the ABL this season.

"There's so many things on top of the financial impact that will hurt baseball for some time to come."

The ABL said it was looking forward to the "biggest season yet" in 2022-2023, "with fewer or no COVID restrictions" and the return of Auckland Tuatara and Geelong-Korea.

"Our goal over the coming years is to build a thriving and sustainable ABL to ensure it regains a strong position in the Australian sporting landscape and remains as one of the best baseball leagues in the world," added Williams.

"For this to happen we need financially strong teams.

"We thank everyone for their continued support during what have been challenging times for all sports, including baseball, and we are determined to rebound bigger and better in 2022."