A question on quoting (people in news articles). [Details inside].

Yesterday I read a small news article on a sports website in which the subject was tennis player Rafael Nadal’s injury.
He was quoted in the article, and the sentence was as follows:
“My shoulder is good,” the 10-time grand slam champion told a clutch of reporters, whose attempts at further questions were thwarted by handlers. “Hopefully (I am ready). I will try my best.”
My question is about the I am ready bit in the sentence.
I can not see to what it relates.
Not to “My shoulder is good” (if it was they could have written it there, “My shoulder is good, I am ready”).
Not to “I will try my best” either.
It could be related to “Hopefully” but why then put it between brackets (“Hope” sounds like one is not sure, while “I am ready” sounds as if one is pretty darn sure)?
Or was it something he said whispering.
Or did he maybe mumble it and the writer of the article worded it like so?
To what is “I am ready” referring?
Any writers here that have an idea what is going on there, in that sentence?
Is there a word for this kind of notation?