I want to start playing tennis; mostly for fun and I have order a cheap tennis racket from Wal-Mart () . In the product’s details just said Wilson Federer Signature Oversize Tennis Racquet.
Is this a kid (junior) rocket?
How different are adult and junior tennis rockets?
Do I need to change it and get an adult racket?

This is the amazing shot that gave Federer match point against Djokovic in the semi-final of the US Open 2009.