Caty McNally will join the United States squad in Glasgow.
Team Spain faces Kazakhstan led by Wimbledon winner Elena Rybakina in its opener.
After the Paris final, Djokovic gave good analysis of the two teenagers that currently populate the top-10.
Djokovic is already eyeing the season finale in Turin, with confidence.
The Dane has his head in the clouds for the moment, but his feet remain firmly planted.
The Dane was outside of the top-100 at the beginning of the season, and could finish in the top-10.
The Spaniard isn't sure what he's dealing with in terms of his abdominal injury, but he hopes to put it behind him by next week.
