Well, according to an article in Golf Digest, which states:
They were two (referring to Lindsey Vonn and Tiger Woods) of the greatest athletes to ever be a couple – until they broke up in 2015.
Fortunately, there are other great athletic couples. Here are some notable ones, albeit many of them are retired from their sports. As several of them have said, however, being a couple can make you even better in your sport.
So in honor of Valentine’s Day, above is just some competitive couples who have found success in their respective sports’ fields of play as well as in love. Maybe, Jim Caple has a point . . . .
Sydney Leroux (USWNT) + Dom Dwyer (MLS/USMNT) 
Stefanie Graf (Tennis) + Andre Agassi (Tennis) 
Mia Hamm (USWNT) + Nomar Garciaparra (MLB) 
Cammi Granato (U.S. Women’s Hockey) + Ray Ferraro (NHL) 
Alex Morgan (USWNT) +Servando Carrasco (MLS) 
Kendall Coyne Schofield (Hockey) + Michael Schofield (NFL) 
Julie Ertz (USWNT) + Zach Ertz (NFL) 
PK Subban (NHL) + Lindsey Vonn (Alpine Skiing) 
Bret Hedican (NHL) + Kristi Yamaguchi (Figure Skating) 
Sanya Richards-Ross (Track) + Aaron Ross (NFL) 
Meagan Rapinoe (USWNT/NWSL) + Sue Bird (WNBA) 
Laila Ali (Boxing) + Curtis Conway (NFL)