Fallen Australian tennis star Bernard Tomic was investigated for alleged match fixing, according to a bombshell report.

The Age revealed the former world No.17 sparked a multi-agency investigation after suspicious betting was flagged on two of his matches over three years ago.

Payouts ranged from $10,000 to $180,000 which led to multiple betting agencies raising the alarm.

The operation was reportedly led by NSW Police, with help from their Victorian and Queensland counterparts and the Australian Criminal Intelligence Commission.

The first match was at the Australian Open qualifying in 2022 when Tomic complained of feeling sick during his loss to Roman Safiullin.

“I’m sure in the next two days I will test positive, I’m telling you,” Tomic told the chair umpire during the match.

“I’ll buy you dinner if I don’t test positive in three days, otherwise you buy me dinner (to the umpire).”

He lasted just 57 minutes against the Russian before later claiming to test positive to COVID days after the match.

The other match in question was in Turkey a few months prior when Frenchman Quentin Halys demolished Tomic 6-0, 6-1.

In both instances, Tomic’s opponents were clear favourites.

According to the report, the police investigation was eventually dropped due to a lack of evidence and Tomic was not charged.

International Tennis Integrity Agency also looked into the matter and seized Tomic’s phone, but also cited a lack of evidence.

“Tennis Australia’s integrity team has worked with the ITIA and law enforcement agencies since first alerted to concerns relating to betting activity in tennis,” a Tennis Australia spokesman told The Age.

“[Tennis Australia] integrity’s role in any investigation has predominantly been one of support throughout. We have been advised there is no current police investigation into this matter.”

There is no suggestion that Tomic is guilty of any wrongdoing, just that he was investigated.

The report comes a week after Tomic bombed out in the first week of qualifying for this year’s tournament. The 32-year-old refused to speak to media after the 6-3, 6-1 loss to Jozef Kovalík.

Tomic shot to fame when he became the youngest player, aged 16 in 2009, to win a men’s main draw match at the Australian Open, then stormed into the 2011 Wimbledon quarter-finals as a qualifier.

But the Queenslander has struggled to fulfil that potential, having last year earned just over $100,000 playing in Challenger and Future events in tennis’s backwaters.

- With AAP