Clouds loomed over Circuit of The Americas as the Pirelli GT4 America field took to the grid for their second race of the weekend. The track surface gradually began to dry up following some light rain early Sunday morning, but conditions remained challenging and unpredictable.
Kenny Murillo moved from third place to first in the space of a single lap 35 minutes into the WeatherTech Raceway Laguna Seca 120 on Saturday, and co-driver Christian Szymczak preserved that lead in the No.