Penn scored 13 points to help the Illini (7-5) jump out to a 31-13 lead. She also had 11 points during a game-changing 13-5 run that gave Illinois a 65-57 advantage after Georgia (12-1) had tied it at 52.
Adrienne GodBold, playing her first game after regaining her eligibility, and Amber Moore added 11 points apiece for Illinois.
Jasmine James and Khaalidah Miller each scored 17 points for the Lady Bulldogs.
Illinois hadn’t beaten a team ranked in the top six since a win over then-No. 5 Georgia on Jan. 2, 2000.
NO. 25 ARKANSAS 71, COPPIN STATE 57
In Fayetteville, Ark., Sarah Watkins scored 22 points to lead Arkansas (12-1) past Coppin State (4-8).
NO. 7 KENTUCKY 90, ALCORN STATE 23
In Lexington, Ky., Samarie Walker had 21 points and 14 rebounds, and Kentucky
(11-1) allowed its fewest points in school history with a win over Alcorn State (0-9).
NO. 9 MARYLAND 76, BROWN 36
In College Park, Md., Tianna Hawkins scored 16 of her 20 points in the first half, and Maryland (9-2) cruised to a victory over Brown (3-6) in the opening round of the Terrapin Classic.
NO. 13 TENNESSEE 75, DAVIDSON 40
In Knoxville, Tenn., Bashaara Graves and Cierra Burdick recorded double-doubles as Tennessee (8-3) trounced Davidson (4-7) to avoid its first three-game losing streak since 1986.
NO. 16 NORTH CAROLINA 85, EAST TENNESSEE STATE 44
In Chapel Hill, N.C., Tierra Ruffin-Pratt had 18 points and nine assists to lead North Carolina (12-1) to a win over East Tennessee State (2-5).
NO. 17 UCLA 77, PEPPERDINE 46
In Malibu, Calif., Nirra Fields scored 19 points and grabbed 12 rebounds to lead UCLA (8-2) over Pepperdine (3-8).
In addition to her double-double, Fields had six assists and six steals.
Atonye Nyingifa had 12 rebounds, and Markel Walker had 11 points for the Bruins.
NO. 24 TEXAS A&M 74, PRAIRIE VIEW 52
In College Station, Texas, Kelsey Bone had 18 points and nine rebounds and Texas A&M (9-4) defeated Prairie View (3-7).
NO. 5 INDIANA 93, JACKSONVILLE 59
In Bloomington, Ind., Jordan Hulls scored a season-high 20 points, Cody Zeller added 16 and Indiana (12-1) cruised past Jacksonville (5-8) in its final nonconference game.
The Hoosiers have won three in a row, all by at least 34 points.
Jacksonville was led by Dylan Fritsch with 15 points.
NO. 13 GONZAGA 94, BAYLOR 87
In Spokane, Wash., Kevin Pangos made seven 3-pointers and scored 31 points to lead Gonzaga (12-1) past Baylor (8-4).
Kelly Olynyk scored 21 for Gonzaga.