Updated June 2: Alex Morgan has been withdrawn from the squad after reinjuring her left hamstring while playing for Lyon in the UEFA Women's Champions League final. Morgan had been cleared to play after suffering the initial injury three weeks ago. Lynn Williams of the North Carolina Courage has been called in as a replacement.

"It is important that Alex has appropriate time to heal and get 100% healthy and ready for [her return to] the Orlando Pride," U.S. coach Jill Ellis said. "Lynn has been gaining momentum in the league and has earned an opportunity to join us for the next two matches."

Updated May 30: Morgan Brian has been withdrawn from the squad because she "experienced tightness in her right hamstring during last weekend's NWSL match with the Houston Dash [and] is still returning to full fitness from a knee injury," U.S. Soccer announced. The federation's medical staff determined that Brian "is not ready for international play."

No replacement has been named, which means that 20 players will travel instead of 21.

[Duly updated after Williams was added to the squad belatedly.]

Houston's Kealia Ohai didn't make it despite a strong start to the season.

Fringe players who were left out include Sky Blue FC's Sarah Killion, who has been called up a few times in recent months, and Chicago's Danielle Colaprico and Vanessa DiBernardo.

Finally, there are two especially glaring omissions among the defensive corps: Orlando outside back Ali Krieger and Portland centerback Emily Sonnett. Krieger has been a national team mainstay for years, but seems to have fallen out of favor in recent times with U.S. head coach Jill Ellis. Sonnett seemed for a time to be the starting centerback of the future, but has lost some of that luster in the last few months.

The summoned players will travel to Europe from their respective NWSL club cities after league games on the weekend of June 3. It will be the national team's first trip to Europe since 2015, when the Americans visited England and France ahead of the World Cup.

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