South Carolina guard Tiffany Mitchell is fouled by Syracuse guard Cornelia Fondren, left, while driving upcourt during the second half of a regional semifinal women's college basketball game in the NCAA Tournament, Friday, March 25, 2016, in Sioux Falls, S.D. (Charlie Neibergall/AP)

In a day of women’s basketball upsets, two of the top three nationally-ranked teams were knocked out of the NCAA tournament in regional semifinals Friday. Both teams were No. 1 tournament seeds.

Notre Dame lost to No. 4 seed Stanford, 90-84. Notre Dame is second-ranked nationally, while Stanford is No. 13.

South Carolina also exited the tournament early with an 80-72 loss to No. 4 seed Syracuse. South Carolina is ranked third nationally, while Syracuse is ranked No. 14.

Earlier in the week, No. 2 seed Maryland — the fifth-ranked team in the country — was soundly defeated by unranked Washington, 74-65, a No. 7 tournament seed.

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