The present invention generally provides a processing system having a robot assembly which includes a multiple sided robot blade that can support a substrate on at least two sides thereof and associated methods to transfer one or more substrates in a processing system. An unprocessed substrate can be supported on the blade while a processed substrate is retrieved from a location to which the unprocessed substrate is to be delivered. The processing throughput rate is increased by reducing the movements required by the robot to exchange processed substrates and unprocessed substrates, thus decreasing the swap time.