McKenzie Arena (also called The Roundhouse) is the primary basketball arena for the University of Tennessee at Chattanooga in Chattanooga in the U.S. state of Tennessee. It replaced Maclellan Gymnasium, a 4,177-seat gymnasium now used for women's volleyball and wrestling. Originally called UTC Arena, it was renamed McKenzie Arena on February 21, 2000 in honor of athletic supporters Toby and Brenda McKenzie of Cleveland, Tennessee.