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

Nerves were rarely an issue for Steffi Graf during her decorated tennis career, even though she found herself playing on the sport’s biggest stages time and again.

Pickleball Slam 3 returned with four tennis standouts displaying their talent on a pickleball court. Here are the results.