Randall was 6 of 12 from the field for the Chippewas (9-8, 2-2 Mid-American), who used a 13-2 run just after halftime to turn a 41-35 deficit into a 48-43 lead and never trailed again. CMU improved to 5-1 at home.
Majok Majok had 14 points and 11 rebounds, his seventh double-double of the season, for the Cardinals (7-9, 1-3), who had won the previous five meetings between the schools and had never lost at McGuirk Arena. Jauwan Scaife chipped in 13 points.
Ball State took a 37-35 lead into halftime but went cold in the second half, going just 9 of 26 from the field and 1 of 13 from 3-point range. Central Michigan turned 17 Cardinals turnovers into 15 points for the game.
Mike Brey is looking at former Notre Dame players to fill two assistant jobs that have opened up with the departures of Martin Ingelsby and Anthony Solomon.
Purdue's 2016-17 prospects got a jolt Wednesday when forward Caleb Swanigan announced he will return for his sophomore season.
Clemson's Jaron Blossomgame says he is withdrawing from the NBA draft and returning to school for a final season.