Connors retired long before I started watching tennis. However, watching some clips of his play led me to believe that most of his groundstrokes were struck with sidespin, backspin, or even "no spin" (c.f. topspin). Agassi was known for his ability to take some groundstrokes on the rise, notably drives. I do remember that when he did not take Patrick Rafter's backhand slices on the rise. He waited and then fired. Did Agassi take Connors's shots on the rise? Is it possible to take sidespin / backspin / flat drives on the rise for a regular player?