Jurgen Klinsmann and Americans preparing for friendlies against Peru on Friday at RFK Stadium and Brazil next Tuesday at Gillette Stadium.
Lead in MLS Eastern Conference trimmed to two points with 3-0 defeat at Red Bull Arena.
Michael Bradley and Clint Dempsey will skip the match in Washington on Friday and join the squad in Boston.
In their final matches before the FIFA international match period begins, Tim Howard and many other Americans were in action in Europe and Mexico.
The host Thorns have announced a sellout crowd of more than 21,000 for the NWSL match.
Experienced midfielder-defender might start with first unit against the New York Red Bulls in an MLS Eastern Conference showdown Sunday.
Both players practiced "full-out" Friday and scheduled to travel with MLS's Eastern Conference leaders for Sunday match.
With 10 days left in the regular season, the semifinalists are set: Spirit, Seattle Reign, FC Kansas City, Chicago Red Stars.
TV and live streams for the top European soccer leagues, including Tottenham Hotspur vs. Everton on NBC.
Cavaliers are ranked No. 2 in the men's and women's polls. Georgetown men are third.