Andre Agassi and Steffi Graf
Considered the first couple of tennis, both Graf and Agassi were top ranking players when they met. Agassi played as a pro from the 1980s to the early 2000s and won a 1996 Olympic gold medal. He's won 8 Grand Slams and held a #1 USTA ranking slot. His wife has 22 major titles under her belt as well as her own Olympic gold medal.