The 25-year-old Italian tested positive for Clostebol—a banned anabolic androgenic steroid.
The 26-year-old Swiss star is expecting her first child.
Tennis Channel will broadcast the year-end Billie Jean King Cup Finals November 7-12, live from Seville, Spain.
"My support is for Jo-Wilfried Tsonga. I would like to have him on the bench," said Ugo Humbert.
Jannik Sinner, who finished his win over Mackenzie McDonald at 2:37 a.m. Thursday, withdrew after he was scheduled as the fourth match on Court Central.
Tommy Paul will make his fifth straight appearance in Delray Beach.
Olympic gold-medal champion hit with fine of $475,000 by Berlin court. Zverev is contesting the penalty order and denies abuse allegations.
