McDermott grabbed nine rebounds and Greg Echenique added 16 points and nine boards for the Bluejays (14-1, 3-0 MVC).
Austin Chatman helped out with 13 points and nine assists for Creighton.
The Sycamores (9-5, 2-1) got 13 points apiece from Manny Arop and Jake Odum, and Justin Gant scored 12.
Interpol investigating stolen passports on missing flight
Dennis Rodman pledges to end trips to North Korea