On the ATP site, it has the Rafa match 'not before 7pm', which would be around 6? here. I'm not sure if that is a good time for Rafa, he likes it hot, if the weather ends up like yesterday, it might make a tricky match, harder.
Although he has a 5-0 hth against PCB.
In other matches- Tsitsipas is playing Sinner, who could be a problem. Stef has a habit of being a bit inconsistent with his results.