Siniakova wins 10th Grand Slam doubles title at Australian Open
The top seeds and reigning Wimbledon champions downed Taiwan's Hsieh Su-wei and Latvian Jelena Ostapenko 6-2, 6-7 (4/7), 6-3 on Rod Laver Arena.
While a 10th major title for Siniakova, it was only the second for Townsend, both of them since she teamed up with the Czech, the world's top-rated doubles player.
"Big thank you to Taylor," said Siniakova. "We are having fun and that is the most important thing."