He blasted: “Roger Federer is certainly the best player ever, but he does not behave correctly.
“I do not think his approach is fair.”
Federer is not expected to return to action until the Gerry Weber Open in Halle in June.
But Tiriac, who was also a professional ice hockey player, believes his approach would not be welcome in any other elite sports.
Meanwhile, Tiriac also slammed the fact that men and women earn the same prize money at the four Grand Slam tournaments.
The 78-year-old Romanian businessman hosts the Madrid Open and claims male players are fed up with the pay equality.
“The men ask me, ‘Ion, how long are you going to pay the women with my money?’”
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