Tony Parker just lost his lawyer in his divorce case with Eva Longoria -- because Tony's lawyer also reps the man who's married to the woman Tony was allegedly sexting.
Richard Orsinger, Esq. filed Tony's divorce petition on November 19 in Texas. But sources connected with the case tell TMZ ... when Tony hired Orsinger, the lawyer didn't know another one of his clients -- former San Antonio Spurs teammate Brent Barry -- would have a connection to Parker's divorce.
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