You don’t mess with the Williams sisters, man!

The president of the Russian Tennis Federation has been banned and fined for questioning the gender of the Williams sisters.

Shamil Tarpischev is now ordered to pay $25,000 to the WTA as well as serve a one-year suspension from tour involvement for his comments.

Tarpischev appeared on the Russian late-night show “Evening Urgant” alongside former WTA player Elena Dementieva last week. When Dementieva was asked what it was like to play against the Williams sisters, Tarpischev jumped in and referred to them as the “Williams brothers,” according to multiple reports.

And the WTA was pissed, and rightfully so…

“The statements made by Shamil Tarpischev on Russian television with respect to two of the greatest athletes in the history of women’s tennis are insulting, demeaning and have absolutely no place in our sport,” WTA Tour chairman and CEO Stacey Allaster said in a statement.

“Mr. Tarpischev’s statements questioning their genders tarnish our great game and two of our champions,” the statement continued. “His derogatory remarks deserve to be condemned and he will be sanctioned.”

Check out the full story on ESPN.