Boris Becker was found guilty on Friday of moving thousands of dollars from a bank account after he was declared bankrupt.
Becker was found guilty of removing property, concealing debt, and failing to disclose estate by a jury at London's Crown Court.
The German star was found to have transferred hundreds of thousands of pounds from his business account to other accounts, including those of his ex-wife Barbara and estranged wife Sharlely Becker.
He was found guilty of hiding a bank loan and shares in a tech firm and failing to declare a property in Germany.
He was acquitted of 20 other counts, including charges that he failed to hand over his many awards.
The six-time Grand Slam champion denied all the charges, saying he had cooperated with trustees tasked with securing his assets, and had acted on expert advice.
According to testimony at the trial, Becker had a private bank loan of $5 million and a British businessman loan of $1.6 million in the year after.
Becker said his career earnings had been swallowed up by payments for an expensive divorce and debts when he lost large chunks of his income after retirement.
He said he had expensive lifestyle commitments, including a house in Wimbledon that cost 22,000 pounds a month to rent. He said bad publicity made it hard for him to earn enough to pay off his debts.
He told the jury that it was difficult to make a lot of money with his name.
The maximum sentence for the charges is seven years in prison. Becker was granted bail until his sentencing.