On January 5, Beijing time, the second round of the WTA500 Adelaide Station began to compete, and the world's first Barty met with the American rising star Gauff. After a fierce battle in three sets, Barty reversed after losing one set first and falling behind 2-4 in the second set, beating Gauff in a singles and doubles match, and the season singles debut ushered in a good start.

In the 3rd set of the first set, Gauff took the lead to complete the break, and then Barty quickly broke back in the 4th set. In the 9th set, Gauff completed a key break on Barty's serve, and then she defused the break point to save the set and win the first set 6-4.
In the second set, Gauff took the lead in the 5th set, and Gauff took a 4-2 lead after holding the set in the 6th set. Barty completed a key break in the 8th set to make it 4-4. In the 12th inning, Barty broke again in a set when Gauff had no way back, and Barty won the second set 7-5.
Both sides kept serves in the first three sets of the decider, with Barty taking the lead in the fourth set to take a 3-1 lead. In the 6th set, Barty broke again in the opponent's serve to take a 5-1 lead to win the game. In the crucial 7th set, Barty defused three consecutive break points to hold serve and win the decider 6-1.
Finally, in a game that took 2 hours and 12 minutes, the world's no. 1 Barty defeated the American young man Gauff 4-6, 7-5, 6-1 to successfully reach the women's singles quarterfinals. In the next quarter-finals, Barty will be waiting for the winner between Kenning and TomJanovic.