Armstrong scored 19 points, grabbed seven rebounds, picked off four steals, blocked three shots and dished out a pair of assists for Georgia (11-2).
“Her scoring is not even the part that impresses me,” said Georgia coach Andy Landers. “I think Anne Marie makes other people better.”
For the second consecutive game, Georgia played without James.
She sprained her right knee Dec. 20 in a win over Montana State.
NO. 3 NOTRE DAME 92, LONGWOOD 26
In South Bend, Ind., Devereaux Peters scored 19 points and Notre Dame opened with a 27-0 run, going on to beat Longwood.
Skylar Diggins added 11 points and 10 assists, Natalie Novosel also scored 11 points.
Fraderica Miller had 10 for the Fighting Irish (12-1), who converted 33 Longwood turnovers into 42 points.
NO. 5 MARYLAND 84, LAFAYETTE 36
In College Park, Md., Brene Moseley scored 12 points and the unbeaten Terps rolled past Lafayette in the first round of the Terrapin Classic.
MIDDLE TENNESSEE 70, NO. 6 KENTUCKY 58
In Murfreesboro, Tenn., Icelyn Elie scored 23 points and Ebony Rowe added 21 while grabbing 12 rebounds as Middle Tennessee upset Kentucky.
NO. 7 TENNESSEE 90, OLD DOMINION 37
In Knoxville, Tenn., Glory Johnson had 16 points and 11 rebounds as Tennessee cruised to a win over Old Dominion.
Vicki Baugh, who lost her starting job after poor play in a Dec. 20 loss at Stanford, had 11 points. She also had 12 rebounds.
NO. 12 MIAMI 89, HOLY CROSS 49
In Coral Gables, Fla., Riquna Williams scored 18 points to lead Miami to a win over Holy Cross in the first round of the Miami Holiday Classic.
NO. 14 LOUISVILLE 70, TENNESSEE-MARTIN 57
In Louisville, Ky., Shoni Schimmel scored 16 points and Cierra Warren added 14 to lead the Cardinals past Tennessee-Martin.
NO. 19 DELAWARE 60, EAST CAROLINA 40
In College Park, Md., NCAA scoring leader Elena Delle Donne scored 22 points as Delaware remained undefeated with a win in the Terrapin Classic.
NO. 22 TEXAS 89, DELAWARE STATE 35
In Austin, Texas, Ashleigh Fontenette scored 10 of her 14 points in the first half to lead Texas past Delaware State.
Texas (10-2) opened with an 18-4 run.