This Russian is doing what all the other lower ranked players do and playing without nerves in good form etc etc. Andy is responding reasonably well with a few strokes of brilliance. Par for the course for a first match but then I'm probably over-optimistic. That injury looked to be above the knee, almost as if the muscle above was swollen - he said it had just 'come up' so what it is is anyone's guess.
I guess it's a bit like what Andy did to Fedex. Someone they don't know.