The USIYPT moved to Oak Ridge Associated Universities for 2011 and 2012, and expanded to a two-day, six-round event. Teams and jurors toured Oak Ridge National Laboratory in between sets of physics fights, viewing the High Flux Isotope Reactor and the Spallation Neutron Source. Official sponsorship in 2011 came from the University of Tennessee department of physics, among others. The Harker School won in 2011; Rye Country Day School of New York won in 2012. Oak Ridge High School won the first-ever Clifford Swartz Trophy for top performance in the tournament's poster session.