With 30 Grand Slam singles titles between them, Graf and Agassi illustrate the growth — and limits — of pickleball's popularity.

This year, tennis legends Steffi Graf, Andre Agassi teamed up against US Open champion Andy Roddick and Wimbledon finalist Eugenie Bouchard for the third annual Pickleball Slam, hosted at the Michelob ULTRA Arena at Mandalay Bay Resort and Casino.

This time though, it wound up being the elder Agassi, with the help of his teammate Steffi Graf, who would walk away victorious. Here are the highlights. Andre Agassi and Steffi Graf got the best of Andy Roddick and Genie Bouchard during this back-and ...