Head to Red Ball Tennis to claim a free Tennis Racquet Pack, which comes with 2 racquets and 2 balls. The fine print even says you can get two of these per household, so if you have a roommate or family member living with you, then y'all can end up with four racquets!
After creating your account, you'll need to verify your email address. Once that's out of the way, you should be redirected to the freebie request part of their site.
Given the non-trivial expense of this freebie, I suspect it won't last very long. So be sure to sign up ASAP if you're interested!
[Thanks to Peter for tipping me off about this freebie!]
