Adler, who has since apologised for how he spoke about Williams, has maintained that he was describing the African-American 13th seed's aggressive style of charging as the "guerilla effect" and not comparing her to a "gorilla."
Doug Adler, commentating on the African-American 13th seed's second-round match against Switzerland's Stefanie Voegele on Wednesday, provoked outrage on social media when he was taken to have described Williams charging "like a gorilla". Adler, a former tennis professional, said he had said "guerrilla".