Venus Williams has withdrawn from the United States team for this week's Fed Cup playoff against host Italy, citing a personal matter.
The United States Tennis Association said Williams will be replaced by world No. 57 Lauren Davis.
The Americans are led by No. 1 great Serena Williams and will also feature 45th-ranked Alison Riske and world No. 65 Christina McHale.
Italy will play without Roberta Vinci, who is nursing an elbow injury.
The best-of-five tie will be staged outdoors on red clay at the Circolo Tennis Brindisi.
The 17-time champion U.S. is 9-4 all-time versus Italy, which has won four of the last nine Fed Cup titles.