Krejcikova and Siniakova participated in the minting of the coins at the national mint. The pair has won four grand slam titles together and is currently the number one doubles team in the world.
Barbora Krejcikova has won eight grand slam titles – one singles title, four doubles titles, and three mixed doubles titles. She is only one of three active players to have won a grand slam title in all three disciplines. Other players to achieve this feat are Serena Williams and Venus Williams.