Both are playing at a challenger in Buenos Aires this week, but neither is playing doubles at all, let alone with each other. They both played singles last week in Montevideo, but did not play doubles together. They are both entered in Cali for next week, perhaps then one will suggest to the other "Hey, wanna try and play together so we don't lose every match embarrassingly in Shanghai."
I wonder how much money you make for showing up at Shanghai and losing all doubles matches. They might figure they're not going to win, so they'll just show up for the prize money.
When they won RG they hadnt been playing together before neither
I dont expect them to win the TMC, but I dont think they're going just to win easy cash