USD jumped to a 21-0 first quarter lead and led 48-10 in the fourth quarter to spoil the Vikings' homecoming game. USD showed extraordinary balance with 337 yards rushing on 52 attempts and 312 yards passing.
Mlady, a junior running back, rushed for 117 yards on 20 carries with a career-best four TDs.
"It is a great feeling to get the ball. We are so diversified and balanced on offense in that we can move the ball on the ground and by passing," said Mlady. "I have to give credit to our offensive line. They work so hard."
South Dakota quarterback Wes Beschorner had yet another record-breaking performance. He completed 14-of-19 passes for 306 yards and two TDs.
With the 306 yards, he set a USD single season passing mark just six games into the season. He now has 1, 828 passing yards, which breaks the mark of 1,826 yards by Ryan Justice in 2000.
In addition, Beschorner had 315 yards in total offense and set a USD career total offense mark of 6,078 yards. He broke the mark of 5,992 held by Ryan Justice from 1999-2002.
The Coyote receiving corps were led by Derek Gearman, who had four receptions for 119 yards and two TDs. Logan, who had 257 all-purpose yards, had three receptions for 79 yards while Brooks Little of Castlewood caught three passes for 46 yards.
Logan led the Coyotes in rushing with 178 yards on 22 carries. With his effort, Logan broke the USD career record of 100-yard rushing games with 19.
USD head coach Ed Meierkort, who improved to 15-2 overall at USD and 6-2 in NCC games, was pleased with his team's play.
"Anytime you win on the road in the NCC, it is big," he said.