Spherical planet (SP) and ellipsoidal planet (EP) model fits to the simulated deformed planet signals with a PRISM noise level of 50 ppm/2 min. The top panel shows the simulated phase curve (left) and transit (right) observations with the fitted models overplotted. The phase curve fit also shows the contribution of deformation to the light curve (blue) and the F_EV component of the EP and SP model fits. The middle and bottom panels show the residuals from fitting a spherical planet model (cyan) and an ellipsoidal planet model to the simulations.