Olympians celebrate four-year anniversary

She and Sock took out fellow Americans Venus Williams and Rajeev Ram in the final. Interestingly enough, Ram and Mattek-Sands were just teammates at World TeamTennis.

This week, players are celebrating the four-year anniversary of their Rio Olympics medal victories. Instead of being in Tokyo for the milestone, they're scattered around the globe in Prague, Kentucky and New York.

Monica Puig, unseeded and a huge underdog, made history by becoming the first Puerto Rican to win a gold medal.

Gold really makes for quite the throwback Thursday, but that's not all the hardware Instagram is seeing. Lucie Safarova and Barbora Strycova are proud winners of bronze medals.

They beat compatriots Andrea Hlavackova and Lucie Hradecka for the coveted spot on the podium.

Petra Kvitova also picked up a bronze four years ago, with a three-set win over Madison Keys.

Bethanie Mattek-Sands won the mixed doubles gold medal with Jack Sock, and while she didn't post a throwback this week (yet) she has many times in the recent past.

She and Sock took out fellow Americans Venus Williams and Rajeev Ram in the final. Interestingly enough, Ram and Mattek-Sands were just teammates at World TeamTennis.

Many more tennis stars have medals from Rio to celebrate, including gold medal singles winner Andy Murray.

The 2020 Olympics have moved to next year and are scheduled to take place in July in Tokyo.

Many more tennis stars have medals from Rio to celebrate, including gold medal singles winner Andy Murray.

The 2020 Olympics have moved to next year and are scheduled to take place in July in Tokyo.