Four Duquesne players hit double figures led by junior Rachel Frederick's 12 points. Senior Kristi Little, sophomore Samantha Pollino and freshman Alex Gensler each added 11 points for Coach Suzie McConnell-Serio's 9-4 squad. Little also had team-highs of seven rebounds and six assists.
Auburn scored the game's first nine points and extended their advantage to 14 before Little's jumper cut the lead to 22-18 with 11:11 on the first half clock. Duquesne would get within five at 32-27 four minutes later. UA had a 50-34 lead at the break.
Auburn maintained control in the second. Duquesne was only able to cut the margin to 13; the Southeastern Conference team extended their lead to as many as 23 points.
The Tigers blocked 15 shots, five by reserve center KeKe Carrier who scored 11 points on 5-of-5 shooting from the floor.
Auburn, which a week-and-a-half earlier beat the Atlantic 10's George Washington (65-51) at the Smith Center, raised its record to 13-0. They entered the tourney ranked at number 10 in the coaches poll, ninth in the Associated Press listing.
Alli Smalley had a game best 21 points. Two AU players recorded double-doubles: forward DeWanna Bonner had 13 points and 13 rebounds while point guard Whitney Boddie's numbers were 14 points and 13 assists.
Auburn plays the winner of tonight's Brown (1-7) versus host Miami (8-3) game in Tuesday's tournament championship, which will follow the Dukes' consolation game.