Pothoff, of Tucson, also had a spectacular result at the Girls 12s, held at the Polo Club of Boca Raton, Fla. She reached the doubles final and the Round of 16 in singles.
Pothoff, the 13th seed in singles, reached her seeding, before falling 7-5, 6-1 to top-seed and eventual finalist, Sonya Kenin, a Nick Bollettieri protégé originally from Russia.
In doubles, Pothoff paired with Jada Hart (Colton, Calif.) to win five rounds before falling to tenth-seeds Kenya Jones (Memphis, Tenn.) and Kaitlyn McCarthy (Cary, N.C.) 0-6, 6-3, 6-3. The sixth seeded Pothoff-Hart duo took out two of the top four seeded pairs on their way to the final.