The website, Pinnacle Sports, reacted to a suspiciously excessive number of bets placed on a match pitting Lara Arruabarrena and David Marrero against Andrea Hlavackova and Lukasz Kubot, something sportsbook head Marco Blume interpreted as a potential red flag for match fixing.
Prosecutor Kate Young told the court that in September 2013, when playing at the Toowoomba Futures Tournament, Lindahl offered to intentionally lose a match to a lower-ranked player and informed an associate so that he could wager against him.
A former top-200 tennis player charged over an alleged match-fixing scheme told a friend he'd admitted to throwing matches before "because that's what tennis players do when they can't play their best", a Sydney court has heard.
Sergeant Young told the court the pair were overheard on a tapped phone call in June 2014 in which Lindahl urged Fox to "hide it all".
That junior player believed he could win the match in his own right and turned Lindahl down, Sergeant Long said, before going straight to tennis officials.
Mr. Fox and Mr. Wolfenden have already had their matters heard before court.
Lindahl, who hit a career-high ranking of 187 in 2010, pleaded not guilty to a second charge that he concealed evidence of match-fixing, while two other charges relating to personal financial gain were dropped by prosecutors.
Magistrate Michelle Goodwin will hand down her decision and sentence in April.
In a statement Monday, Tennis Australia said it is aware of the situation and declined further comment.
Tennis in recent times has been passing through a dark phase with reports of match-fixing in the most of prestigious of Grand Slams- Wimbledon- causing ripples across the sporting fraternity.
Hlavackova and Kubot won the match, 6-0, 6-3.
Marrero later cited a knee injury for hindering his performance in the straight-sets loss.
Tennis regulators accept betting fluctuations can be an indicator of suspicious activity, but stress it is not sufficient to prove match-fixing.