Rush scored an efficient 24 points and grabbed 12 rebounds as Missouri pulled away from a very game Xavier team 72-60.
Missouri only lead by two at the half, but Clarence Gilbert scored all of his 10 points in the second half, and high-flying Ricky Paulding added 10 points of his own.
The Tigers were also buoyed by excellent shooting from their sophomore point guard Wesley Stokes who chipped in 14 points, including several key long-range three pointers.
With the victory against Xavier, Missouri looks to climb the national rankings into the top five this week.
Missouri returns home to face Jackson State later this week.