American 10th seed Danielle Collins will be remembered for her post-match gesture to Melbourne’s parochial crowd, than her second-round victory over Australian qualifier Destanee Aiava. Collins, who was a beaten finalist to Ash Barty in 2022, was tested by the unfancied Aiava in a 7-6(7-4), 4-6, 6-2 win. But the talking point of the night came after match point, when …