CHICAGO (AP) — Lindsay Horan was left off the U.S. roster for the SheBelieves Cup tournament because of a quadriceps injury.
It was unclear when the Portland Thorns midfielder was hurt.
Coach Jill Ellis announced 23 players for her roster on Tuesday. The United States opens with Japan on Feb. 27 in Chester, Pennsylvania, plays England on March 2 at Nashville, Tennessee, and closes group play three days later against Brazil in Tampa, Florida.
All four teams are among the top 10 in FIFA's rankings and will play at this year's Women's World Cup in France.
"These are all teams that can go deep in the tournament this summer and provide the kind of tests we need as we continue to work to crystalize our lineup and our final roster for the World Cup," Ellis said in a statement.
All 23 Americans were on the roster for the team's exhibition games against France and Spain last month.
The United States will hold a pre-tournament training camp in Tampa, that includes four additional players: goalkeeper Jane Campbell, defenders Merritt Mathias and Emily Fox and midfielder Allie Long.
Goalkeepers: Adrianna Franch (Portland Thorns), Ashlyn Harris (Orlando Pride), Alyssa Naeher (Chicago Red Stars).
Defenders: Abby Dahlkemper (NC Courage), Tierna Davidson (Chicago Red Stars), Crystal Dunn (NC Courage), Kelley O'Hara (Utah Royals), Becky Sauerbrunn (Utah Royals), Casey Short (Chicago Red Stars), Emily Sonnett (Portland Thorns).
Midfielders: Danielle Colaprico (Chicago Red Stars), Julie Ertz (Chicago Red Stars), Rose Lavelle (Washington Spirit), Samantha Mewis (NC Courage), Andi Sullivan (Washington Spirit), McCall Zerboni (NC Courage)
Forwards: Tobin Heath (Portland Thorns), Carli Lloyd (Sky Blue), Jessica McDonald (NC Courage), Alex Morgan (Orlando Pride), Christen Press (Utah Royals), Mallory Pugh (Washington Spirit), Megan Rapinoe (Seatle Reign)