Sundaymorningguy
Grand Slam Champion
See I would either do Mirnyi, Tsonga or Llodra. I think Isner sure sounds good on paper, but is a disaster in reality because he offers nothing other than a serve. You need someone who can be more than that in doubles. You need that safety net of knowing they can bring more to the table than just one thing. Serena certainly has the package. You have to think about also say Serena had a long day in singles. Does she really want to have to depend on John Isner for movement based things if she isn't feeling it after a long singles match? I don't think so. She needs someone who can fill in if she can't be there 100% after a long singles match.