Racing Louisville selected UNC defender Emily Fox at No. 1 in Wednesday's NWSL Draft, and the Washington Spirit selected Trinity Rodman at No. 2.
Tobin Heath, Rose Lavelle, Sam Mewis, Alex Morgan and Christen Press are all playing in England and will not join the camp.
Rose Lavelle joins USWNT teammate Sam Mewis at Manchester City for the 2020-21 season.
NWSL side OL Reign announced it has acquired the rights to U.S. women's midfielder Rose Lavelle from the Washington Spirit.
Sky Blue will play the Chicago Red Stars, who also advanced 4-3 on penalties after a scoreless draw with OL Reign in Saturday's late match.
Washington Spirit captain Andi Sullivan will miss the remainder of the NWSL Challenge Cup after tearing the medial meniscus in her left knee.
Chicago Red Stars forward Rachel Hill explained her choice to stand during the national anthem before a game against the Washington Spirit.